diff --git a/TODO-RELEASE b/TODO-RELEASE
index dde4b72f2..17dc17a83 100644
--- a/TODO-RELEASE
+++ b/TODO-RELEASE
@@ -8,3 +8,5 @@
 # If any interfaces have been removed or changed since the last public release: c:r:0.
 #library	what		description / commit summary line
 manual				needs common chapter cs7-config.adoc from osmo-gsm-manuals > 0.3.0
+libosmocore	osmo_mobile_identity	Depends on libosmocore > 1.3.0
+osmo-msc	Mobile Identity Coding	OsmoMSC is stricter in rejecting invalid coding of Mobile Identity IEs
diff --git a/include/osmocom/msc/gsm_04_08.h b/include/osmocom/msc/gsm_04_08.h
index 661da42b3..bfc8027db 100644
--- a/include/osmocom/msc/gsm_04_08.h
+++ b/include/osmocom/msc/gsm_04_08.h
@@ -54,8 +54,6 @@ int decode_bcd_number(char *output, int output_len, const uint8_t *bcd_lv,
 		      int h_len);
 
 int send_siemens_mrpci(struct gsm_lchan *lchan, uint8_t *classmark2_lv);
-int gsm48_extract_mi(uint8_t *classmark2, int length, char *mi_string, uint8_t *mi_type);
-int gsm48_paging_extract_mi(struct gsm48_pag_resp *pag, int length, char *mi_string, uint8_t *mi_type);
 
 int gsm48_lchan_modify(struct gsm_lchan *lchan, uint8_t lchan_mode);
 int gsm48_rx_rr_modif_ack(struct msgb *msg);
diff --git a/include/osmocom/msc/msub.h b/include/osmocom/msc/msub.h
index 2418febcf..14f3e76ce 100644
--- a/include/osmocom/msc/msub.h
+++ b/include/osmocom/msc/msub.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <osmocom/gsm/gsm48.h>
+
 #include <osmocom/msc/debug.h>
 #include <osmocom/msc/msc_roles.h>
 
@@ -64,7 +66,7 @@ int _msub_role_dispatch(struct msub *msub, enum msc_role to_role, uint32_t to_ro
 			const char *file, int line);
 int msub_tx_an_apdu(struct msub *msub, enum msc_role from_role, enum msc_role to_role, struct an_apdu *an_apdu);
 
-void msub_update_id_from_mi(struct msub *msub, const uint8_t mi[], uint8_t mi_len);
+void msub_update_id_from_mi(struct msub *msub, const struct osmo_mobile_identity *mi);
 void msub_update_id(struct msub *msub);
 void msub_update_id_for_vsub(struct vlr_subscr *for_vsub);
 
diff --git a/include/osmocom/msc/vlr.h b/include/osmocom/msc/vlr.h
index 615c6c874..83f83c717 100644
--- a/include/osmocom/msc/vlr.h
+++ b/include/osmocom/msc/vlr.h
@@ -23,6 +23,7 @@
 	LOGP(DVLR, level, "SUBSCR(%s) " fmt, vlr_subscr_name(vsub), ## args)
 
 struct log_target;
+struct osmo_mobile_identity;
 
 #define VLR_SUBSCRIBER_NO_EXPIRATION	0
 #define VLR_SUBSCRIBER_LU_EXPIRATION_INTERVAL	60	/* in seconds */
@@ -302,7 +303,7 @@ void vlr_loc_update_cancel(struct osmo_fsm_inst *fi,
 /* tell the VLR that the RAN connection is gone */
 int vlr_subscr_disconnected(struct vlr_subscr *vsub);
 bool vlr_subscr_expire(struct vlr_subscr *vsub);
-int vlr_subscr_rx_id_resp(struct vlr_subscr *vsub, const uint8_t *mi, size_t mi_len);
+int vlr_subscr_rx_id_resp(struct vlr_subscr *vsub, const struct osmo_mobile_identity *mi);
 int vlr_subscr_rx_auth_resp(struct vlr_subscr *vsub, bool is_r99, bool is_utran,
 			    const uint8_t *res, uint8_t res_len);
 int vlr_subscr_rx_auth_fail(struct vlr_subscr *vsub, const uint8_t *auts);
@@ -440,7 +441,7 @@ vlr_proc_acc_req(struct osmo_fsm_inst *parent,
 		 void *parent_event_data,
 		 struct vlr_instance *vlr, void *msc_conn_ref,
 		 enum vlr_parq_type type, enum osmo_cm_service_type cm_service_type,
-		 const uint8_t *mi_lv,
+		 const struct osmo_mobile_identity *mi,
 		 const struct osmo_location_area_id *lai,
 		 bool authentication_required,
 		 bool ciphering_required,
diff --git a/src/libmsc/gsm_04_08.c b/src/libmsc/gsm_04_08.c
index d612e40ea..a70c4b918 100644
--- a/src/libmsc/gsm_04_08.c
+++ b/src/libmsc/gsm_04_08.c
@@ -116,13 +116,15 @@ static int gsm0408_loc_upd_acc(struct msc_a *msc_a, uint32_t send_tmsi)
 	struct msgb *msg = gsm48_msgb_alloc_name("GSM 04.08 LOC UPD ACC");
 	struct gsm48_hdr *gh;
 	struct gsm48_loc_area_id *lai;
-	uint8_t *mid;
 	struct gsm_network *net = msc_a_net(msc_a);
 	struct vlr_subscr *vsub = msc_a_vsub(msc_a);
 	struct osmo_location_area_id laid = {
 		.plmn = net->plmn,
 		.lac = vsub->cgi.lai.lac,
 	};
+	uint8_t *l;
+	int rc;
+	struct osmo_mobile_identity mi = {};
 
 	gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh));
 	gh->proto_discr = GSM48_PDISC_MM;
@@ -135,23 +137,28 @@ static int gsm0408_loc_upd_acc(struct msc_a *msc_a, uint32_t send_tmsi)
 		/* we did not allocate a TMSI to the MS, so we need to
 		 * include the IMSI in order for the MS to delete any
 		 * old TMSI that might still be allocated */
-		uint8_t mi[10];
-		int len;
-		len = gsm48_generate_mid_from_imsi(mi, vsub->imsi);
-		mid = msgb_put(msg, len);
-		memcpy(mid, mi, len);
+		mi.type = GSM_MI_TYPE_IMSI;
+		OSMO_STRLCPY_ARRAY(mi.imsi, vsub->imsi);
 		DEBUGP(DMM, "-> %s LOCATION UPDATE ACCEPT\n",
 		       vlr_subscr_name(vsub));
 	} else {
 		/* Include the TMSI, which means that the MS will send a
 		 * TMSI REALLOCATION COMPLETE, and we should wait for
 		 * that until T3250 expiration */
-		mid = msgb_put(msg, GSM48_MID_TMSI_LEN);
-		gsm48_generate_mid_from_tmsi(mid, send_tmsi);
+		mi.type = GSM_MI_TYPE_TMSI;
+		mi.tmsi = send_tmsi;
 		DEBUGP(DMM, "-> %s LOCATION UPDATE ACCEPT (TMSI = 0x%08x)\n",
 		       vlr_subscr_name(vsub),
 		       send_tmsi);
 	}
+	l = msgb_tl_put(msg, GSM48_IE_MOBILE_ID);
+	rc = osmo_mobile_identity_encode_msgb(msg, &mi, false);
+	if (rc < 0) {
+		msgb_free(msg);
+		return -EINVAL;
+	}
+	*l = rc;
+
 	/* TODO: Follow-on proceed */
 	/* TODO: CTS permission */
 	/* TODO: Equivalent PLMNs */
@@ -180,10 +187,11 @@ static int mm_tx_identity_req(struct msc_a *msc_a, uint8_t id_type)
 static int mm_rx_id_resp(struct msc_a *msc_a, struct msgb *msg)
 {
 	struct gsm48_hdr *gh = msgb_l3(msg);
-	uint8_t *mi = gh->data+1;
+	uint8_t *mi_data = gh->data+1;
 	uint8_t mi_len = gh->data[0];
-	uint8_t mi_type;
 	struct vlr_subscr *vsub = msc_a_vsub(msc_a);
+	struct osmo_mobile_identity mi;
+	int rc;
 
 	if (!vsub) {
 		LOGP(DMM, LOGL_ERROR,
@@ -198,26 +206,26 @@ static int mm_rx_id_resp(struct msc_a *msc_a, struct msgb *msg)
 		return -EINVAL;
 	}
 
-	/* Make sure we got what we expected */
-	mi_type = mi[0] & GSM_MI_TYPE_MASK;
-	if (mi_type == GSM_MI_TYPE_NONE) {
-		LOGP(DMM, LOGL_NOTICE, "MM Identity Response contains no identity, "
-				       "perhaps the MS has no Mobile Identity type %s?\n",
-				       gsm48_mi_type_name(msc_a->mm_id_req_type));
+	rc = osmo_mobile_identity_decode(&mi, mi_data, mi_len, false);
+	if (rc) {
+		LOGP(DMM, LOGL_ERROR, "Failure to decode Mobile Identity in MM Identity Response (rc=%d)\n", rc);
 		return -EINVAL;
-	} else if (mi_type != msc_a->mm_id_req_type) {
+	}
+
+	/* Make sure we got what we expected */
+	if (mi.type != msc_a->mm_id_req_type) {
 		LOGP(DMM, LOGL_NOTICE, "MM Identity Response contains unexpected "
 				       "Mobile Identity type %s (extected %s)\n",
-				       gsm48_mi_type_name(mi_type),
+				       gsm48_mi_type_name(mi.type),
 				       gsm48_mi_type_name(msc_a->mm_id_req_type));
 		return -EINVAL;
 	}
 
-	DEBUGP(DMM, "IDENTITY RESPONSE: MI=%s\n", osmo_mi_name(mi, mi_len));
+	DEBUGP(DMM, "IDENTITY RESPONSE: %s\n", osmo_mobile_identity_to_str_c(OTC_SELECT, &mi));
 
 	osmo_signal_dispatch(SS_SUBSCR, S_SUBSCR_IDENTITY, gh->data);
 
-	return vlr_subscr_rx_id_resp(vsub, mi, mi_len);
+	return vlr_subscr_rx_id_resp(vsub, &mi);
 }
 
 /* 9.2.5 CM service accept */
@@ -311,8 +319,6 @@ static int mm_rx_loc_upd_req(struct msc_a *msc_a, struct msgb *msg)
 {
 	struct gsm48_hdr *gh = msgb_l3(msg);
 	struct gsm48_loc_upd_req *lu;
-	uint8_t mi_type;
-	char mi_string[GSM48_MI_SIZE];
 	enum vlr_lu_type vlr_lu_type = VLR_LU_TYPE_REGULAR;
 	uint32_t tmsi;
 	char *imsi;
@@ -321,6 +327,15 @@ static int mm_rx_loc_upd_req(struct msc_a *msc_a, struct msgb *msg)
 	bool is_utran;
 	struct gsm_network *net = msc_a_net(msc_a);
 	struct vlr_subscr *vsub;
+	struct osmo_mobile_identity mi;
+	int rc;
+
+	rc = osmo_mobile_identity_decode_from_l3(&mi, msg, false);
+	if (rc) {
+		LOG_MSC_A_CAT(msc_a, DMM, LOGL_ERROR,
+			      "Failed to decode Mobile Identity in Location Updating Request\n");
+		return -EINVAL;
+	}
 
  	lu = (struct gsm48_loc_upd_req *) gh->data;
 
@@ -328,7 +343,7 @@ static int mm_rx_loc_upd_req(struct msc_a *msc_a, struct msgb *msg)
 		LOG_MSC_A_CAT(msc_a, DMM, LOGL_ERROR,
 			     "Cannot accept another LU, conn already busy establishing authenticity;"
 			     " extraneous LOCATION UPDATING REQUEST: MI=%s LU-type=%s\n",
-			     osmo_mi_name(lu->mi, lu->mi_len), osmo_lu_type_name(lu->type));
+			     osmo_mobile_identity_to_str_c(OTC_SELECT, &mi), osmo_lu_type_name(lu->type));
 		return -EINVAL;
 	}
 
@@ -336,17 +351,18 @@ static int mm_rx_loc_upd_req(struct msc_a *msc_a, struct msgb *msg)
 		LOG_MSC_A_CAT(msc_a, DMM, LOGL_ERROR,
 			     "Cannot accept another LU, conn already established;"
 			     " extraneous LOCATION UPDATING REQUEST: MI=%s LU-type=%s\n",
-			     osmo_mi_name(lu->mi, lu->mi_len), osmo_lu_type_name(lu->type));
+			     osmo_mobile_identity_to_str_c(OTC_SELECT, &mi), osmo_lu_type_name(lu->type));
 		return -EINVAL;
 	}
 
 	msc_a->complete_layer3_type = COMPLETE_LAYER3_LU;
-	msub_update_id_from_mi(msc_a->c.msub, lu->mi, lu->mi_len);
+
+	msub_update_id_from_mi(msc_a->c.msub, &mi);
 
 	LOG_MSC_A_CAT(msc_a, DMM, LOGL_DEBUG, "LOCATION UPDATING REQUEST: MI=%s LU-type=%s\n",
-		     osmo_mi_name(lu->mi, lu->mi_len), osmo_lu_type_name(lu->type));
+		     osmo_mobile_identity_to_str_c(OTC_SELECT, &mi), osmo_lu_type_name(lu->type));
 
-	osmo_signal_dispatch(SS_SUBSCR, S_SUBSCR_IDENTITY, &lu->mi_len);
+	osmo_signal_dispatch(SS_SUBSCR, S_SUBSCR_IDENTITY, &mi);
 
 	switch (lu->type) {
 	case GSM48_LUPD_NORMAL:
@@ -368,15 +384,13 @@ static int mm_rx_loc_upd_req(struct msc_a *msc_a, struct msgb *msg)
 	/* TODO: 10.5.7.8 Device properties */
 	/* TODO: 10.5.1.15 MS network feature support */
 
-	mi_type = lu->mi[0] & GSM_MI_TYPE_MASK;
-	gsm48_mi_to_string(mi_string, sizeof(mi_string), lu->mi, lu->mi_len);
-	switch (mi_type) {
+	switch (mi.type) {
 	case GSM_MI_TYPE_IMSI:
 		tmsi = GSM_RESERVED_TMSI;
-		imsi = mi_string;
+		imsi = mi.imsi;
 		break;
 	case GSM_MI_TYPE_TMSI:
-		tmsi = tmsi_from_string(mi_string);
+		tmsi = mi.tmsi;
 		imsi = NULL;
 		break;
 	default:
@@ -654,37 +668,30 @@ int gsm48_tx_mm_auth_rej(struct msc_a *msc_a)
 static int msc_vlr_tx_cm_serv_rej(void *msc_conn_ref, enum osmo_cm_service_type cm_service_type,
 				  enum gsm48_reject_value cause);
 
-static int cm_serv_reuse_conn(struct msc_a *msc_a, const uint8_t *mi_lv, enum osmo_cm_service_type cm_serv_type)
+static int cm_serv_reuse_conn(struct msc_a *msc_a, const struct osmo_mobile_identity *mi, enum osmo_cm_service_type cm_serv_type)
 {
-	uint8_t mi_type;
-	char mi_string[GSM48_MI_SIZE];
-	uint32_t tmsi;
 	struct gsm_network *net = msc_a_net(msc_a);
 	struct vlr_subscr *vsub = msc_a_vsub(msc_a);
 
-	gsm48_mi_to_string(mi_string, sizeof(mi_string), mi_lv+1, mi_lv[0]);
-	mi_type = mi_lv[1] & GSM_MI_TYPE_MASK;
-
-	switch (mi_type) {
+	switch (mi->type) {
 	case GSM_MI_TYPE_IMSI:
-		if (vlr_subscr_matches_imsi(vsub, mi_string))
+		if (vlr_subscr_matches_imsi(vsub, mi->imsi))
 			goto accept_reuse;
 		break;
 	case GSM_MI_TYPE_TMSI:
-		tmsi = osmo_load32be(mi_lv+2);
-		if (vlr_subscr_matches_tmsi(vsub, tmsi))
+		if (vlr_subscr_matches_tmsi(vsub, mi->tmsi))
 			goto accept_reuse;
 		break;
 	case GSM_MI_TYPE_IMEI:
-		if (vlr_subscr_matches_imei(vsub, mi_string))
+		if (vlr_subscr_matches_imei(vsub, mi->imei))
 			goto accept_reuse;
 		break;
 	default:
 		break;
 	}
 
-	LOG_MSC_A_CAT(msc_a, DMM, LOGL_ERROR, "CM Service Request with mismatching mobile identity: %s %s\n",
-		      gsm48_mi_type_name(mi_type), mi_string);
+	LOG_MSC_A_CAT(msc_a, DMM, LOGL_ERROR, "CM Service Request with mismatching mobile identity: %s\n",
+		      osmo_mobile_identity_to_str_c(OTC_SELECT, mi));
 	msc_vlr_tx_cm_serv_rej(msc_a, cm_serv_type, GSM48_REJECT_ILLEGAL_MS);
 	return -EINVAL;
 
@@ -714,10 +721,10 @@ int gsm48_rx_mm_serv_req(struct msc_a *msc_a, struct msgb *msg)
 	struct gsm48_service_request *req;
 	struct gsm48_classmark2 *cm2;
 	uint8_t *cm2_buf, cm2_len;
-	uint8_t *mi_buf, mi_len;
-	uint8_t *mi, mi_type;
 	bool is_utran;
 	struct vlr_subscr *vsub;
+	struct osmo_mobile_identity mi;
+	int rc;
 
 	/* Make sure that both header and CM Service Request fit into the buffer */
 	if (msgb_l3len(msg) < sizeof(*gh) + sizeof(*req)) {
@@ -726,6 +733,12 @@ int gsm48_rx_mm_serv_req(struct msc_a *msc_a, struct msgb *msg)
 		return msc_gsm48_tx_mm_serv_rej(msc_a, GSM48_REJECT_INCORRECT_MESSAGE);
 	}
 
+	rc = osmo_mobile_identity_decode_from_l3(&mi, msg, false);
+	if (rc) {
+		LOG_MSC_A(msc_a, LOGL_ERROR, "Rx CM SERVICE REQUEST: unable to decode Mobile Identity\n");
+		return msc_gsm48_tx_mm_serv_rej(msc_a, GSM48_REJECT_INCORRECT_MESSAGE);
+	}
+
 	gh = (struct gsm48_hdr *) msgb_l3(msg);
 	req = (struct gsm48_service_request *) gh->data;
 
@@ -742,18 +755,6 @@ int gsm48_rx_mm_serv_req(struct msc_a *msc_a, struct msgb *msg)
 		return msc_gsm48_tx_mm_serv_rej(msc_a, GSM48_REJECT_INCORRECT_MESSAGE);
 	}
 
-	/* MI (Mobile Identity) LV follows the Classmark2 */
-	mi_buf = cm2_buf + cm2_len;
-	mi_len = mi_buf[0];
-	mi = mi_buf + 1;
-
-	/* Prevent buffer overrun: check the length of MI */
-	if (mi_buf + mi_len > msg->tail) {
-		LOG_MSC_A(msc_a, LOGL_ERROR, "Rx CM SERVICE REQUEST: Mobile Identity "
-					     "length=%u is too big\n", cm2_len);
-		return msc_gsm48_tx_mm_serv_rej(msc_a, GSM48_REJECT_INCORRECT_MESSAGE);
-	}
-
 	if (msc_a_is_establishing_auth_ciph(msc_a)) {
 		LOG_MSC_A(msc_a, LOGL_ERROR,
 			  "Cannot accept CM Service Request, conn already busy establishing authenticity\n");
@@ -762,12 +763,11 @@ int gsm48_rx_mm_serv_req(struct msc_a *msc_a, struct msgb *msg)
 	}
 
 	msc_a->complete_layer3_type = COMPLETE_LAYER3_CM_SERVICE_REQ;
-	msub_update_id_from_mi(msc_a->c.msub, mi, mi_len);
+	msub_update_id_from_mi(msc_a->c.msub, &mi);
 	LOG_MSC_A_CAT(msc_a, DMM, LOGL_DEBUG, "Rx CM SERVICE REQUEST cm_service_type=%s\n",
 		     osmo_cm_service_type_name(req->cm_service_type));
 
-	mi_type = (mi && mi_len) ? (mi[0] & GSM_MI_TYPE_MASK) : GSM_MI_TYPE_NONE;
-	switch (mi_type) {
+	switch (mi.type) {
 	case GSM_MI_TYPE_IMSI:
 	case GSM_MI_TYPE_TMSI:
 		/* continue below */
@@ -781,7 +781,7 @@ int gsm48_rx_mm_serv_req(struct msc_a *msc_a, struct msgb *msg)
 		}
 		/* fall-through for non-emergency setup */
 	default:
-		LOG_MSC_A(msc_a, LOGL_ERROR, "MI type is not expected: %s\n", gsm48_mi_type_name(mi_type));
+		LOG_MSC_A(msc_a, LOGL_ERROR, "MI type is not expected: %s\n", gsm48_mi_type_name(mi.type));
 		return msc_gsm48_tx_mm_serv_rej(msc_a, GSM48_REJECT_INCORRECT_MESSAGE);
 	}
 
@@ -789,9 +789,9 @@ int gsm48_rx_mm_serv_req(struct msc_a *msc_a, struct msgb *msg)
 		return msc_gsm48_tx_mm_serv_rej(msc_a, GSM48_REJECT_SRV_OPT_NOT_SUPPORTED);
 
 	if (msc_a_is_accepted(msc_a))
-		return cm_serv_reuse_conn(msc_a, mi_buf, req->cm_service_type);
+		return cm_serv_reuse_conn(msc_a, &mi, req->cm_service_type);
 
-	osmo_signal_dispatch(SS_SUBSCR, S_SUBSCR_IDENTITY, mi_buf);
+	osmo_signal_dispatch(SS_SUBSCR, S_SUBSCR_IDENTITY, &mi);
 
 	msc_a_get(msc_a, msc_a_cm_service_type_to_use(req->cm_service_type));
 
@@ -801,7 +801,7 @@ int gsm48_rx_mm_serv_req(struct msc_a *msc_a, struct msgb *msg)
 			 net->vlr, msc_a,
 			 VLR_PR_ARQ_T_CM_SERV_REQ,
 			 req->cm_service_type,
-			 mi-1, &msc_a->via_cell.lai,
+			 &mi, &msc_a->via_cell.lai,
 			 is_utran || net->authentication_required,
 			 is_utran ? net->uea_encryption : net->a5_encryption_mask > 0x01,
 			 req->cipher_key_seq,
@@ -824,18 +824,9 @@ int gsm48_rx_mm_serv_req(struct msc_a *msc_a, struct msgb *msg)
 /* Receive a CM Re-establish Request */
 static int gsm48_rx_cm_reest_req(struct msc_a *msc_a, struct msgb *msg)
 {
-	uint8_t mi_type;
-	char mi_string[GSM48_MI_SIZE];
-	struct gsm48_hdr *gh = msgb_l3(msg);
-
-	uint8_t classmark2_len = gh->data[1];
-	uint8_t *classmark2 = gh->data+2;
-	uint8_t mi_len = *(classmark2 + classmark2_len);
-	uint8_t *mi = (classmark2 + classmark2_len + 1);
-
-	gsm48_mi_to_string(mi_string, sizeof(mi_string), mi, mi_len);
-	mi_type = mi[0] & GSM_MI_TYPE_MASK;
-	DEBUGP(DMM, "<- CM RE-ESTABLISH REQUEST MI(%s)=%s\n", gsm48_mi_type_name(mi_type), mi_string);
+	struct osmo_mobile_identity mi;
+	osmo_mobile_identity_decode_from_l3(&mi, msg, false);
+	DEBUGP(DMM, "<- CM RE-ESTABLISH REQUEST %s\n", osmo_mobile_identity_to_str_c(OTC_SELECT, &mi));
 
 	/* we don't support CM call re-establishment */
 	return msc_gsm48_tx_mm_serv_rej(msc_a, GSM48_REJECT_SRV_OPT_NOT_SUPPORTED);
@@ -847,39 +838,41 @@ static int gsm48_rx_mm_imsi_detach_ind(struct msc_a *msc_a, struct msgb *msg)
 	struct gsm48_hdr *gh = msgb_l3(msg);
 	struct gsm48_imsi_detach_ind *idi =
 				(struct gsm48_imsi_detach_ind *) gh->data;
-	uint8_t mi_type = idi->mi[0] & GSM_MI_TYPE_MASK;
-	char mi_string[GSM48_MI_SIZE];
+	struct osmo_mobile_identity mi;
 	struct vlr_subscr *vsub = NULL;
 
-	gsm48_mi_to_string(mi_string, sizeof(mi_string), idi->mi, idi->mi_len);
-	DEBUGP(DMM, "IMSI DETACH INDICATION: MI(%s)=%s\n",
-	       gsm48_mi_type_name(mi_type), mi_string);
+	int rc = osmo_mobile_identity_decode_from_l3(&mi, msg, false);
+	if (rc) {
+		LOGP(DMM, LOGL_ERROR, "IMSI DETACH INDICATION: cannot decode Mobile Identity\n");
+		return -EINVAL;
+	}
+
+	DEBUGP(DMM, "IMSI DETACH INDICATION: %s\n", osmo_mobile_identity_to_str_c(OTC_SELECT, &mi));
 
 	rate_ctr_inc(&net->msc_ctrs->ctr[MSC_CTR_LOC_UPDATE_TYPE_DETACH]);
 
-	switch (mi_type) {
+	switch (mi.type) {
 	case GSM_MI_TYPE_TMSI:
-		vsub = vlr_subscr_find_by_tmsi(net->vlr,
-					       tmsi_from_string(mi_string), __func__);
+		vsub = vlr_subscr_find_by_tmsi(net->vlr, mi.tmsi, __func__);
 		break;
 	case GSM_MI_TYPE_IMSI:
-		vsub = vlr_subscr_find_by_imsi(net->vlr, mi_string, __func__);
+		vsub = vlr_subscr_find_by_imsi(net->vlr, mi.imsi, __func__);
 		break;
 	case GSM_MI_TYPE_IMEI:
 	case GSM_MI_TYPE_IMEISV:
 		/* no sim card... FIXME: what to do ? */
-		LOGP(DMM, LOGL_ERROR, "MI(%s)=%s: unimplemented mobile identity type\n",
-		     gsm48_mi_type_name(mi_type), mi_string);
+		LOGP(DMM, LOGL_ERROR, "%s: unimplemented mobile identity type\n",
+		     osmo_mobile_identity_to_str_c(OTC_SELECT, &mi));
 		break;
 	default:
-		LOGP(DMM, LOGL_ERROR, "MI(%s)=%s: unknown mobile identity type\n",
-		     gsm48_mi_type_name(mi_type), mi_string);
+		LOGP(DMM, LOGL_ERROR, "%s: unknown mobile identity type\n",
+		     osmo_mobile_identity_to_str_c(OTC_SELECT, &mi));
 		break;
 	}
 
 	if (!vsub) {
-		LOGP(DMM, LOGL_ERROR, "IMSI DETACH for unknown subscriber MI(%s)=%s\n",
-		     gsm48_mi_type_name(mi_type), mi_string);
+		LOGP(DMM, LOGL_ERROR, "IMSI DETACH for unknown subscriber %s\n",
+		     osmo_mobile_identity_to_str_c(OTC_SELECT, &mi));
 	} else {
 		LOGP(DMM, LOGL_INFO, "IMSI DETACH for %s\n", vlr_subscr_name(vsub));
 		msub_set_vsub(msc_a->c.msub, vsub);
@@ -1148,9 +1141,10 @@ static int gsm48_rx_rr_pag_resp(struct msc_a *msc_a, struct msgb *msg)
 	uint8_t classmark2_len = gh->data[1];
 	uint8_t *classmark2_buf = gh->data+2;
 	struct gsm48_classmark2 *cm2 = (void*)classmark2_buf;
-	uint8_t *mi_lv = classmark2_buf + classmark2_len;
 	bool is_utran;
 	struct vlr_subscr *vsub;
+	struct osmo_mobile_identity mi;
+	int rc;
 
 	if (msc_a_is_establishing_auth_ciph(msc_a)) {
 		LOG_MSC_A_CAT(msc_a, DRR, LOGL_ERROR,
@@ -1163,9 +1157,15 @@ static int gsm48_rx_rr_pag_resp(struct msc_a *msc_a, struct msgb *msg)
 		return 0;
 	}
 
+	rc = osmo_mobile_identity_decode_from_l3(&mi, msg, false);
+	if (rc) {
+		LOG_MSC_A_CAT(msc_a, DRR, LOGL_ERROR, "Paging Response: cannot decode Mobile Identity\n");
+		return -EINVAL;
+	}
+
 	msc_a->complete_layer3_type = COMPLETE_LAYER3_PAGING_RESP;
-	msub_update_id_from_mi(msc_a->c.msub, mi_lv + 1, *mi_lv);
-	LOG_MSC_A_CAT(msc_a, DRR, LOGL_DEBUG, "Rx PAGING RESPONSE\n");
+	msub_update_id_from_mi(msc_a->c.msub, &mi);
+	LOG_MSC_A_CAT(msc_a, DRR, LOGL_DEBUG, "Rx PAGING RESPONSE %s\n", osmo_mobile_identity_to_str_c(OTC_SELECT, &mi));
 
 	msc_a_get(msc_a, MSC_A_USE_PAGING_RESPONSE);
 
@@ -1173,7 +1173,7 @@ static int gsm48_rx_rr_pag_resp(struct msc_a *msc_a, struct msgb *msg)
 	vlr_proc_acc_req(msc_a->c.fi,
 			 MSC_A_EV_AUTHENTICATED, MSC_A_EV_CN_CLOSE, NULL,
 			 net->vlr, msc_a,
-			 VLR_PR_ARQ_T_PAGING_RESP, 0, mi_lv, &msc_a->via_cell.lai,
+			 VLR_PR_ARQ_T_PAGING_RESP, 0, &mi, &msc_a->via_cell.lai,
 			 is_utran || net->authentication_required,
 			 is_utran ? net->uea_encryption : net->a5_encryption_mask > 0x01,
 			 pr->key_seq,
@@ -1200,30 +1200,37 @@ static int gsm48_rx_rr_ciphering_mode_complete(struct msc_a *msc_a, struct msgb
 	struct gsm48_hdr *gh = msgb_l3(msg);
 	unsigned int payload_len = msgb_l3len(msg) - sizeof(*gh);
 	struct tlv_parsed tp;
-	struct tlv_p_entry *mi;
+	struct tlv_p_entry *mi_tlv;
+	struct osmo_mobile_identity mi;
 
 	tlv_parse(&tp, &gsm48_att_tlvdef, gh->data, payload_len, 0, 0);
-	mi = TLVP_GET(&tp, GSM48_IE_MOBILE_ID);
+	mi_tlv = TLVP_GET(&tp, GSM48_IE_MOBILE_ID);
 
 	/* IMEI(SV) is optional for this message */
-	if (!mi)
+	if (!mi_tlv)
 		return 0;
-	if (!mi->len)
+	if (!mi_tlv->len)
 		return -EINVAL;
-	if ((mi->val[0] & GSM_MI_TYPE_MASK) != GSM_MI_TYPE_IMEISV) {
+
+	if (osmo_mobile_identity_decode(&mi, mi_tlv->val, mi_tlv->len, false)) {
+		LOGP(DMM, LOGL_ERROR, "RR Ciphering Mode Complete contains invalid Mobile Identity %s\n",
+		     osmo_hexdump(mi_tlv->val, mi_tlv->len));
+		return -EINVAL;
+	}
+	if (mi.type != GSM_MI_TYPE_IMEISV) {
 		LOGP(DMM, LOGL_ERROR, "RR Ciphering Mode Complete contains "
 				      "unexpected Mobile Identity type %s\n",
-				      gsm48_mi_type_name(mi->val[0] & GSM_MI_TYPE_MASK));
+				      osmo_mobile_identity_to_str_c(OTC_SELECT, &mi));
 		return -EINVAL;
 	}
 
 	LOG_MSC_A(msc_a, LOGL_DEBUG, "RR Ciphering Mode Complete contains Mobile Identity: %s\n",
-		  osmo_mi_name(mi->val, mi->len));
+		  osmo_mobile_identity_to_str_c(OTC_SELECT, &mi));
 
 	if (!vsub)
 		return 0;
 
-	return vlr_subscr_rx_id_resp(vsub, mi->val, mi->len);
+	return vlr_subscr_rx_id_resp(vsub, &mi);
 }
 
 static int gsm48_rx_rr_app_info(struct msc_a *msc_a, struct msgb *msg)
@@ -1460,27 +1467,3 @@ struct msgb *gsm48_create_loc_upd_rej(uint8_t cause)
 	gh->data[0] = cause;
 	return msg;
 }
-
-int gsm48_extract_mi(uint8_t *classmark2_lv, int length, char *mi_string, uint8_t *mi_type)
-{
-	/* Check the size for the classmark */
-	if (length < 1 + *classmark2_lv)
-		return -1;
-
-	uint8_t *mi_lv = classmark2_lv + *classmark2_lv + 1;
-	if (length < 2 + *classmark2_lv + mi_lv[0])
-		return -2;
-
-	*mi_type = mi_lv[1] & GSM_MI_TYPE_MASK;
-	return gsm48_mi_to_string(mi_string, GSM48_MI_SIZE, mi_lv+1, *mi_lv);
-}
-
-int gsm48_paging_extract_mi(struct gsm48_pag_resp *resp, int length,
-			    char *mi_string, uint8_t *mi_type)
-{
-	static const uint32_t classmark_offset =
-		offsetof(struct gsm48_pag_resp, classmark2);
-	uint8_t *classmark2_lv = (uint8_t *) &resp->classmark2;
-	return gsm48_extract_mi(classmark2_lv, length - classmark_offset,
-				mi_string, mi_type);
-}
diff --git a/src/libmsc/msc_a.c b/src/libmsc/msc_a.c
index bc5b7ea93..4d856d0f8 100644
--- a/src/libmsc/msc_a.c
+++ b/src/libmsc/msc_a.c
@@ -1100,9 +1100,9 @@ const struct value_string complete_layer3_type_names[] = {
 
 
 /* Compose an ID almost like gsm48_mi_to_string(), but print the MI type along, and print a TMSI as hex. */
-void msc_a_update_id_from_mi(struct msc_a *msc_a, const uint8_t mi[], uint8_t mi_len)
+void msc_a_update_id_from_mi(struct msc_a *msc_a, const struct osmo_mobile_identity *mi)
 {
-	_msc_a_update_id(msc_a, "%s", osmo_mi_name(mi, mi_len));
+	_msc_a_update_id(msc_a, "%s", osmo_mobile_identity_to_str_c(OTC_SELECT, mi));
 }
 
 /* Update msc_a->fi id string from current msc_a->vsub and msc_a->complete_layer3_type. */
diff --git a/src/libmsc/msub.c b/src/libmsc/msub.c
index 2021ed827..112703a13 100644
--- a/src/libmsc/msub.c
+++ b/src/libmsc/msub.c
@@ -488,9 +488,9 @@ static void _msub_update_id(struct msub *msub, const char *subscr_name)
 }
 
 /* Compose an ID almost like gsm48_mi_to_string(), but print the MI type along, and print a TMSI as hex. */
-void msub_update_id_from_mi(struct msub *msub, const uint8_t mi[], uint8_t mi_len)
+void msub_update_id_from_mi(struct msub *msub, const struct osmo_mobile_identity *mi)
 {
-	_msub_update_id(msub, osmo_mi_name(mi, mi_len));
+	_msub_update_id(msub, osmo_mobile_identity_to_str_c(OTC_SELECT, mi));
 }
 
 /* Update msub->fi id string from current msub->vsub and msub->complete_layer3_type. */
diff --git a/src/libmsc/ran_msg_a.c b/src/libmsc/ran_msg_a.c
index cb228ef9b..28f99ceee 100644
--- a/src/libmsc/ran_msg_a.c
+++ b/src/libmsc/ran_msg_a.c
@@ -497,7 +497,6 @@ static int ran_a_decode_handover_request(struct ran_dec *ran_dec, const struct m
 	struct gsm0808_encrypt_info encr_info;
 	struct gsm0808_speech_codec_list scl;
 	struct geran_encr geran_encr = {};
-	char imsi[OSMO_IMSI_BUF_SIZE];
 	struct osmo_sockaddr_str rtp_ran_local;
 
 	if (!ie_channel_type) {
@@ -608,8 +607,12 @@ static int ran_a_decode_handover_request(struct ran_dec *ran_dec, const struct m
 	}
 
 	if (ie_imsi) {
-		gsm48_mi_to_string(imsi, sizeof(imsi), ie_imsi->val, ie_imsi->len);
-		r->imsi = imsi;
+		struct osmo_mobile_identity mi;
+		if (osmo_mobile_identity_decode(&mi, ie_imsi->val, ie_imsi->len, false)
+		    || mi.type != GSM_MI_TYPE_IMSI)
+			LOG_RAN_A_DEC_MSG(LOGL_ERROR, "IE IMSI: cannot decode IMSI identity\n");
+		else
+			r->imsi = mi.imsi;
 	}
 
 	if (ie_aoip_transp_addr) {
diff --git a/src/libmsc/sgs_iface.c b/src/libmsc/sgs_iface.c
index 422ce7294..b792e466f 100644
--- a/src/libmsc/sgs_iface.c
+++ b/src/libmsc/sgs_iface.c
@@ -373,7 +373,7 @@ static void sgs_tx_loc_upd_resp_cb(struct sgs_lu_response *response)
 	struct sgs_mme_ctx *mme;
 	uint8_t new_id[2 + GSM48_TMSI_LEN];
 	uint8_t *new_id_ptr = new_id;
-	unsigned int new_id_len = 0;
+	int new_id_len = 0;
 	uint8_t resp_msg_type;
 
 	/* Determine message type that is sent next (needed for logging) */
@@ -398,9 +398,13 @@ static void sgs_tx_loc_upd_resp_cb(struct sgs_lu_response *response)
 	/* Handle LU accept/reject */
 	if (response->accepted) {
 		if (vsub->tmsi_new != GSM_RESERVED_TMSI) {
-			new_id_len = gsm48_generate_mid_from_tmsi(new_id, vsub->tmsi_new);
-			new_id_ptr = new_id + 2;
-			new_id_len -= 2;
+			struct osmo_mobile_identity tmsi_mi = {
+				.type = GSM_MI_TYPE_TMSI,
+				.tmsi = vsub->tmsi_new,
+			};
+			new_id_len = osmo_mobile_identity_encode_buf(new_id, sizeof(new_id), &tmsi_mi, false);
+			if (new_id_len > 0)
+				new_id_ptr = new_id;
 		}
 		resp = gsm29118_create_lu_ack(vsub->imsi, &vsub->sgs.lai, new_id_ptr, new_id_len);
 		sgs_tx(mme->conn, resp);
@@ -958,12 +962,16 @@ int sgs_iface_rx(struct sgs_connection *sgc, struct msgb *msg)
 	}
 
 	if (TLVP_PRESENT(&tp, SGSAP_IE_IMSI)) {
-		gsm48_mi_to_string(imsi, sizeof(imsi), TLVP_VAL(&tp, SGSAP_IE_IMSI), TLVP_LEN(&tp, SGSAP_IE_IMSI));
-		if (strlen(imsi) < GSM23003_IMSI_MIN_DIGITS) {
+		struct osmo_mobile_identity mi;
+		if (osmo_mobile_identity_decode(&mi,
+						TLVP_VAL(&tp, SGSAP_IE_IMSI),
+						TLVP_LEN(&tp, SGSAP_IE_IMSI), false)
+		    ||  mi.type != GSM_MI_TYPE_IMSI) {
 			TX_STATUS_AND_LOG(sgc, msg_type, SGSAP_SGS_CAUSE_INVALID_MAND_IE,
-					  "SGsAP Message %s with short IMSI, dropping\n");
+					  "SGsAP Message %s with invalid IMSI, dropping\n");
 			goto error;
 		}
+		OSMO_STRLCPY_ARRAY(imsi, mi.imsi);
 	}
 
 	/* Some messages contain an MME-NAME as mandatore IE, parse it right here. The
diff --git a/src/libvlr/vlr.c b/src/libvlr/vlr.c
index 019e6577e..3a44d3090 100644
--- a/src/libvlr/vlr.c
+++ b/src/libvlr/vlr.c
@@ -1117,64 +1117,49 @@ int vlr_gsup_rx(struct gsup_client_mux *gcm, void *data, const struct osmo_gsup_
 }
 
 /* MSC->VLR: Subscriber has provided IDENTITY RESPONSE */
-int vlr_subscr_rx_id_resp(struct vlr_subscr *vsub,
-			  const uint8_t *mi, size_t mi_len)
+int vlr_subscr_rx_id_resp(struct vlr_subscr *vsub, const struct osmo_mobile_identity *mi)
 {
-	char mi_string[GSM48_MI_SIZE];
-	uint8_t mi_type = mi[0] & GSM_MI_TYPE_MASK;
-
-	gsm48_mi_to_string(mi_string, sizeof(mi_string), mi, mi_len);
-
 	/* update the vlr_subscr with the given identity */
-	switch (mi_type) {
+	switch (mi->type) {
 	case GSM_MI_TYPE_IMSI:
-		if (strlen(mi_string) >= sizeof(vsub->imsi)) {
-			LOGVSUBP(LOGL_ERROR, vsub, "IMSI in ID RESP too long (>%zu bytes): %s\n",
-				 sizeof(vsub->imsi) - 1, mi_string);
-			return -ENOSPC; /* ignore message; do not avance LU FSM */
-		} else if (vsub->imsi[0]
-		    && !vlr_subscr_matches_imsi(vsub, mi_string)) {
+		if (vsub->imsi[0]
+		    && !vlr_subscr_matches_imsi(vsub, mi->imsi)) {
 			LOGVSUBP(LOGL_ERROR, vsub, "IMSI in ID RESP differs:"
-				 " %s\n", mi_string);
+				 " %s\n", mi->imsi);
 			/* XXX Should we return an error, e.g. -EINVAL ? */
 		} else
-			vlr_subscr_set_imsi(vsub, mi_string);
+			vlr_subscr_set_imsi(vsub, mi->imsi);
 		break;
 	case GSM_MI_TYPE_IMEI:
-		vlr_subscr_set_imei(vsub, mi_string);
+		vlr_subscr_set_imei(vsub, mi->imei);
 		break;
 	case GSM_MI_TYPE_IMEISV:
-		vlr_subscr_set_imeisv(vsub, mi_string);
+		vlr_subscr_set_imeisv(vsub, mi->imeisv);
 		break;
 	default:
 		return -EINVAL;
 	}
 
 	if (vsub->auth_fsm) {
-		switch (mi_type) {
+		switch (mi->type) {
 		case GSM_MI_TYPE_IMSI:
-			osmo_fsm_inst_dispatch(vsub->auth_fsm,
-					VLR_AUTH_E_MS_ID_IMSI, mi_string);
+			return osmo_fsm_inst_dispatch(vsub->auth_fsm,
+						      VLR_AUTH_E_MS_ID_IMSI, (void*)mi->imsi);
 			break;
 		}
 	}
 
 	if (vsub->lu_fsm) {
-		uint32_t event = 0;
-		switch (mi_type) {
+		switch (mi->type) {
 		case GSM_MI_TYPE_IMSI:
-			event = VLR_ULA_E_ID_IMSI;
-			break;
+			return osmo_fsm_inst_dispatch(vsub->lu_fsm, VLR_ULA_E_ID_IMSI, (void*)mi->imsi);
 		case GSM_MI_TYPE_IMEI:
-			event = VLR_ULA_E_ID_IMEI;
-			break;
+			return osmo_fsm_inst_dispatch(vsub->lu_fsm, VLR_ULA_E_ID_IMEI, (void*)mi->imei);
 		case GSM_MI_TYPE_IMEISV:
-			event = VLR_ULA_E_ID_IMEISV;
-			break;
+			return osmo_fsm_inst_dispatch(vsub->lu_fsm, VLR_ULA_E_ID_IMEISV, (void*)mi->imeisv);
 		default:
 			return -EINVAL;
 		}
-		osmo_fsm_inst_dispatch(vsub->lu_fsm, event, mi_string);
 	}
 
 	return 0;
diff --git a/src/libvlr/vlr_access_req_fsm.c b/src/libvlr/vlr_access_req_fsm.c
index 73f895505..73f343570 100644
--- a/src/libvlr/vlr_access_req_fsm.c
+++ b/src/libvlr/vlr_access_req_fsm.c
@@ -632,7 +632,7 @@ vlr_proc_acc_req(struct osmo_fsm_inst *parent,
 		 void *parent_event_data,
 		 struct vlr_instance *vlr, void *msc_conn_ref,
 		 enum vlr_parq_type type, enum osmo_cm_service_type cm_service_type,
-		 const uint8_t *mi_lv,
+		 const struct osmo_mobile_identity *mi,
 		 const struct osmo_location_area_id *lai,
 		 bool authentication_required,
 		 bool ciphering_required,
@@ -641,8 +641,6 @@ vlr_proc_acc_req(struct osmo_fsm_inst *parent,
 {
 	struct osmo_fsm_inst *fi;
 	struct proc_arq_priv *par;
-	char mi_string[GSM48_MI_SIZE];
-	uint8_t mi_type;
 
 	fi = osmo_fsm_inst_alloc_child(&proc_arq_vlr_fsm, parent,
 				       parent_event_failure);
@@ -678,16 +676,14 @@ vlr_proc_acc_req(struct osmo_fsm_inst *parent,
 		LOGPFSML(fi, LOGL_ERROR,
 			 "Authentication off on UTRAN network. Good luck.\n");
 
-	gsm48_mi_to_string(mi_string, sizeof(mi_string), mi_lv+1, mi_lv[0]);
-	mi_type = mi_lv[1] & GSM_MI_TYPE_MASK;
-	switch (mi_type) {
+	switch (mi->type) {
 	case GSM_MI_TYPE_IMSI:
-		osmo_strlcpy(par->imsi, mi_string, sizeof(par->imsi));
+		OSMO_STRLCPY_ARRAY(par->imsi, mi->imsi);
 		par->by_tmsi = false;
 		break;
 	case GSM_MI_TYPE_TMSI:
 		par->by_tmsi = true;
-		par->tmsi = osmo_load32be(mi_lv+2);
+		par->tmsi = mi->tmsi;
 		break;
 	case GSM_MI_TYPE_IMEI:
 		/* TODO: IMEI (emergency call) */
diff --git a/tests/msc_vlr/msc_vlr_test_authen_reuse.err b/tests/msc_vlr/msc_vlr_test_authen_reuse.err
index 288040f8d..fc33b38ba 100644
--- a/tests/msc_vlr/msc_vlr_test_authen_reuse.err
+++ b/tests/msc_vlr/msc_vlr_test_authen_reuse.err
@@ -458,7 +458,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
+DMM IMSI DETACH INDICATION: IMSI-901700000010650
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -990,7 +990,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DIUCS msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
+DMM IMSI DETACH INDICATION: IMSI-901700000010650
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -1598,7 +1598,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
+DMM IMSI DETACH INDICATION: IMSI-901700000010650
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -2242,7 +2242,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DIUCS msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
+DMM IMSI DETACH INDICATION: IMSI-901700000010650
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -2630,7 +2630,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
+DMM IMSI DETACH INDICATION: IMSI-901700000010650
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -3038,7 +3038,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DIUCS msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
+DMM IMSI DETACH INDICATION: IMSI-901700000010650
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
diff --git a/tests/msc_vlr/msc_vlr_test_call.err b/tests/msc_vlr/msc_vlr_test_call.err
index b65165952..a8c79847e 100644
--- a/tests/msc_vlr/msc_vlr_test_call.err
+++ b/tests/msc_vlr/msc_vlr_test_call.err
@@ -695,7 +695,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DIUCS msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000010650
 DREF msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP)
@@ -1166,7 +1166,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DIUCS msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000010650
 DREF msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP)
diff --git a/tests/msc_vlr/msc_vlr_test_gsm_authen.err b/tests/msc_vlr/msc_vlr_test_gsm_authen.err
index ad2b80cd0..70423557c 100644
--- a/tests/msc_vlr/msc_vlr_test_gsm_authen.err
+++ b/tests/msc_vlr/msc_vlr_test_gsm_authen.err
@@ -352,7 +352,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000004620
 DREF msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP)
@@ -538,7 +538,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -983,7 +983,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(TMSI-0x03020100:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(TMSI-0x03020100:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE TMSI-0x03020100
 DREF msc_a(TMSI-0x03020100:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(TMSI-0x03020100:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(TMSI-0x03020100:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(TMSI-0x03020100:GERAN-A:PAGING_RESP)
@@ -1361,7 +1361,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(TMSI)=117835012
+DMM IMSI DETACH INDICATION: TMSI-0x07060504
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -1575,7 +1575,7 @@ DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}:
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-423423423423420
+DMM IDENTITY RESPONSE: IMEI-423423423423420
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
 GSUP --> HLR: OSMO_GSUP_MSGT_CHECK_IMEI_REQUEST: 30010809710000004026f0500807244332244332240a0101
@@ -1673,7 +1673,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -1887,7 +1887,7 @@ DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}:
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-423423423423420
+DMM IDENTITY RESPONSE: IMEI-423423423423420
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
 GSUP --> HLR: OSMO_GSUP_MSGT_CHECK_IMEI_REQUEST: 30010809710000004026f0500807244332244332240a0101
@@ -2152,7 +2152,7 @@ DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}:
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-423423423423420
+DMM IDENTITY RESPONSE: IMEI-423423423423420
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
 GSUP --> HLR: OSMO_GSUP_MSGT_CHECK_IMEI_REQUEST: 30010809710000004026f0500807244332244332240a0101
@@ -2418,7 +2418,7 @@ DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}:
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-423423423423420
+DMM IDENTITY RESPONSE: IMEI-423423423423420
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
 GSUP --> HLR: OSMO_GSUP_MSGT_CHECK_IMEI_REQUEST: 30010809710000004026f0500807244332244332240a0101
@@ -2557,7 +2557,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(TMSI)=50462976
+DMM IMSI DETACH INDICATION: TMSI-0x03020100
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -2929,7 +2929,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000010650:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000010650:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000010650
 DREF msc_a(IMSI-901700000010650:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000010650:GERAN-A:PAGING_RESP)
@@ -3115,7 +3115,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
+DMM IMSI DETACH INDICATION: IMSI-901700000010650
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
diff --git a/tests/msc_vlr/msc_vlr_test_gsm_ciph.err b/tests/msc_vlr/msc_vlr_test_gsm_ciph.err
index d4b450be1..e75309618 100644
--- a/tests/msc_vlr/msc_vlr_test_gsm_ciph.err
+++ b/tests/msc_vlr/msc_vlr_test_gsm_ciph.err
@@ -388,7 +388,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000004620
 DREF msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP)
@@ -606,7 +606,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -1088,7 +1088,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(TMSI-0x03020100:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(TMSI-0x03020100:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE TMSI-0x03020100
 DREF msc_a(TMSI-0x03020100:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(TMSI-0x03020100:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(TMSI-0x03020100:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(TMSI-0x03020100:GERAN-A:PAGING_RESP)
@@ -1306,7 +1306,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(TMSI)=50462976
+DMM IMSI DETACH INDICATION: TMSI-0x03020100
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -1527,7 +1527,7 @@ DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}:
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-423423423423420
+DMM IDENTITY RESPONSE: IMEI-423423423423420
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
 GSUP --> HLR: OSMO_GSUP_MSGT_CHECK_IMEI_REQUEST: 30010809710000004026f0500807244332244332240a0101
@@ -1625,7 +1625,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -1909,7 +1909,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -2130,7 +2130,7 @@ DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}:
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-423423423423420
+DMM IDENTITY RESPONSE: IMEI-423423423423420
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
 GSUP --> HLR: OSMO_GSUP_MSGT_CHECK_IMEI_REQUEST: 30010809710000004026f0500807244332244332240a0101
@@ -2269,7 +2269,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(TMSI)=50462976
+DMM IMSI DETACH INDICATION: TMSI-0x03020100
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -2666,7 +2666,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000010650:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000010650:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000010650
 DREF msc_a(IMSI-901700000010650:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000010650:GERAN-A:PAGING_RESP)
@@ -2866,7 +2866,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
+DMM IMSI DETACH INDICATION: IMSI-901700000010650
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -3292,7 +3292,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000004620
 DREF msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP)
@@ -3510,7 +3510,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-42342 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-42342
 DREF VLR subscr IMSI-901700000004620:MSISDN-42342 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -3936,7 +3936,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000004620
 DREF msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP)
@@ -4132,7 +4132,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-42342 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-42342
 DREF VLR subscr IMSI-901700000004620:MSISDN-42342 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
diff --git a/tests/msc_vlr/msc_vlr_test_ms_timeout.err b/tests/msc_vlr/msc_vlr_test_ms_timeout.err
index 6ccc82a46..66ea0bb1a 100644
--- a/tests/msc_vlr/msc_vlr_test_ms_timeout.err
+++ b/tests/msc_vlr/msc_vlr_test_ms_timeout.err
@@ -646,7 +646,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm48_rx_mm_imsi_detach_ind: now used by 5 (attached,SMS-receiver,SMS,Paging,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + active-conn: now used by 6 (attached,SMS-receiver,SMS,Paging,gsm48_rx_mm_imsi_detach_ind,active-conn)
diff --git a/tests/msc_vlr/msc_vlr_test_no_authen.err b/tests/msc_vlr/msc_vlr_test_no_authen.err
index 335043125..2ee21daba 100644
--- a/tests/msc_vlr/msc_vlr_test_no_authen.err
+++ b/tests/msc_vlr/msc_vlr_test_no_authen.err
@@ -264,7 +264,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000004620
 DREF msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP)
@@ -405,7 +405,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -762,7 +762,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(TMSI-0x03020100:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(TMSI-0x03020100:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE TMSI-0x03020100
 DREF msc_a(TMSI-0x03020100:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(TMSI-0x03020100:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(TMSI-0x03020100:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(TMSI-0x03020100:GERAN-A:PAGING_RESP)
@@ -1088,7 +1088,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(TMSI)=117835012
+DMM IMSI DETACH INDICATION: TMSI-0x07060504
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -1259,7 +1259,7 @@ DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}:
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-423423423423420
+DMM IDENTITY RESPONSE: IMEI-423423423423420
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
 GSUP --> HLR: OSMO_GSUP_MSGT_CHECK_IMEI_REQUEST: 30010809710000004026f0500807244332244332240a0101
@@ -1339,7 +1339,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -1510,7 +1510,7 @@ DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}:
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-423423423423420
+DMM IDENTITY RESPONSE: IMEI-423423423423420
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:GERAN-A:LU){VLR_ULA_S_WAIT_LU_COMPL}: Received Event VLR_ULA_E_ID_IMEI
 GSUP --> HLR: OSMO_GSUP_MSGT_CHECK_IMEI_REQUEST: 30010809710000004026f0500807244332244332240a0101
@@ -1625,7 +1625,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -1714,7 +1714,7 @@ DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: - rx_from_ms: n
 DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-SV-4234234234234275
+DMM IDENTITY RESPONSE: IMEI-SV-4234234234234275
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=4234234234234275
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: Received Event VLR_ULA_E_ID_IMEISV
@@ -1846,7 +1846,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -1935,7 +1935,7 @@ DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: - rx_from_ms: n
 DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-SV-4234234234234275
+DMM IDENTITY RESPONSE: IMEI-SV-4234234234234275
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=4234234234234275
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: Received Event VLR_ULA_E_ID_IMEISV
@@ -2078,7 +2078,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -2167,7 +2167,7 @@ DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: - rx_from_ms: n
 DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-SV-4234234234234275
+DMM IDENTITY RESPONSE: IMEI-SV-4234234234234275
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=4234234234234275
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: Received Event VLR_ULA_E_ID_IMEISV
@@ -2366,7 +2366,7 @@ DREF msc_a(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){MSC_A_S
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-SV-5234234234234276
+DMM IDENTITY RESPONSE: IMEI-SV-5234234234234276
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=5234234234234276
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=52342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: Received Event VLR_ULA_E_ID_IMEISV
@@ -2544,7 +2544,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(TMSI)=117835012
+DMM IMSI DETACH INDICATION: TMSI-0x07060504
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x07060504 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -2633,7 +2633,7 @@ DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: - rx_from_ms: n
 DREF msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMEI-SV-4234234234234275
+DMM IDENTITY RESPONSE: IMEI-SV-4234234234234275
 DVLR set IMEISV on subscriber; IMSI=901700000004620 IMEISV=4234234234234275
 DVLR set IMEI on subscriber; IMSI=901700000004620 IMEI=42342342342342
 DVLR vlr_lu_fsm(IMSI-901700000004620:GERAN-A:LU){VLR_ULA_S_WAIT_IMEISV}: Received Event VLR_ULA_E_ID_IMEISV
@@ -2813,7 +2813,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
diff --git a/tests/msc_vlr/msc_vlr_test_reject_concurrency.err b/tests/msc_vlr/msc_vlr_test_reject_concurrency.err
index 8953c1d4a..48086a737 100644
--- a/tests/msc_vlr/msc_vlr_test_reject_concurrency.err
+++ b/tests/msc_vlr/msc_vlr_test_reject_concurrency.err
@@ -803,7 +803,7 @@ DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AU
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTHENTICATED}: + rx_from_ms: now used by 2 (cm_service_sms,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTHENTICATED}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTHENTICATED}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm48_rx_mm_imsi_detach_ind: now used by 3 (attached,active-conn,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + vlr_subscr_cancel_attach_fsm: now used by 4 (attached,active-conn,gsm48_rx_mm_imsi_detach_ind,vlr_subscr_cancel_attach_fsm)
@@ -1044,7 +1044,7 @@ DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AU
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTHENTICATED}: + rx_from_ms: now used by 3 (2*cm_service_sms,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTHENTICATED}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTHENTICATED}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm48_rx_mm_imsi_detach_ind: now used by 3 (attached,active-conn,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + vlr_subscr_cancel_attach_fsm: now used by 4 (attached,active-conn,gsm48_rx_mm_imsi_detach_ind,vlr_subscr_cancel_attach_fsm)
@@ -1480,7 +1480,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000004620
 DREF msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP)
@@ -1780,7 +1780,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000004620
 DREF msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP)
@@ -1893,7 +1893,7 @@ DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AU
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTHENTICATED}: + rx_from_ms: now used by 2 (cm_service_sms,rx_from_ms)
 DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTHENTICATED}: RAN decode: DTAP
 DRLL msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTHENTICATED}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm48_rx_mm_imsi_detach_ind: now used by 3 (attached,active-conn,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + vlr_subscr_cancel_attach_fsm: now used by 4 (attached,active-conn,gsm48_rx_mm_imsi_detach_ind,vlr_subscr_cancel_attach_fsm)
@@ -2104,7 +2104,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000004620
 DREF msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP)
diff --git a/tests/msc_vlr/msc_vlr_test_rest.err b/tests/msc_vlr/msc_vlr_test_rest.err
index 4121a264f..ad8d82287 100644
--- a/tests/msc_vlr/msc_vlr_test_rest.err
+++ b/tests/msc_vlr/msc_vlr_test_rest.err
@@ -358,7 +358,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000004620
+DMM IMSI DETACH INDICATION: IMSI-901700000004620
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000004620:MSISDN-46071
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -466,7 +466,7 @@ DBSSAP msc_a(TMSI-0x23422342:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode error (
 DREF msc_a(TMSI-0x23422342:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: + rx_from_ms: now used by 2 (lu,rx_from_ms)
 DBSSAP msc_a(TMSI-0x23422342:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: RAN decode: DTAP
 DRLL msc_a(TMSI-0x23422342:GERAN-A:LU){MSC_A_ST_AUTH_CIPH}: Dispatching 04.08 message: MM GSM48_MT_MM_ID_RESP
-DMM IDENTITY RESPONSE: MI=IMSI-901700000004620
+DMM IDENTITY RESPONSE: IMSI-901700000004620
 DVLR set IMSI on subscriber; IMSI=901700000004620 id=901700000004620
 DVLR vlr_lu_fsm(TMSI-0x23422342:GERAN-A:LU){VLR_ULA_S_WAIT_IMSI}: Received Event VLR_ULA_E_ID_IMSI
 DVLR set IMSI on subscriber; IMSI=901700000004620 id=901700000004620
diff --git a/tests/msc_vlr/msc_vlr_test_ss.err b/tests/msc_vlr/msc_vlr_test_ss.err
index db158d657..cd4cf5cec 100644
--- a/tests/msc_vlr/msc_vlr_test_ss.err
+++ b/tests/msc_vlr/msc_vlr_test_ss.err
@@ -399,7 +399,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000004620
 DREF msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000004620:GERAN-A:PAGING_RESP)
diff --git a/tests/msc_vlr/msc_vlr_test_umts_authen.err b/tests/msc_vlr/msc_vlr_test_umts_authen.err
index 3e5dbae88..53cce7938 100644
--- a/tests/msc_vlr/msc_vlr_test_umts_authen.err
+++ b/tests/msc_vlr/msc_vlr_test_umts_authen.err
@@ -369,7 +369,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000010650:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000010650:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000010650
 DREF msc_a(IMSI-901700000010650:GERAN-A:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:GERAN-A:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000010650:GERAN-A:PAGING_RESP)
@@ -556,7 +556,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DBSSAP msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:GERAN-A:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
+DMM IMSI DETACH INDICATION: IMSI-901700000010650
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -975,7 +975,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DIUCS msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000010650
 DREF msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP)
@@ -1164,7 +1164,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DIUCS msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
+DMM IMSI DETACH INDICATION: IMSI-901700000010650
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)
@@ -1599,7 +1599,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DIUCS msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: RR GSM48_MT_RR_PAG_RESP
-DRR msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE
+DRR msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: Rx PAGING RESPONSE IMSI-901700000010650
 DREF msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){MSC_A_ST_VALIDATE_L3}: + paging-response: now used by 2 (rx_from_ms,paging-response)
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){PR_ARQ_S_INIT}: Allocated
 DVLR Process_Access_Request_VLR(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP){PR_ARQ_S_INIT}: is child of msc_a(IMSI-901700000010650:UTRAN-Iu:PAGING_RESP)
@@ -1796,7 +1796,7 @@ DMSC dummy_msc_i{0}: is child of msub_fsm
 DREF msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: + rx_from_ms: now used by 1 (rx_from_ms)
 DIUCS msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: RAN decode: COMPL_L3
 DRLL msc_a(unknown:UTRAN-Iu:NONE){MSC_A_ST_VALIDATE_L3}: Dispatching 04.08 message: MM GSM48_MT_MM_IMSI_DETACH_IND
-DMM IMSI DETACH INDICATION: MI(IMSI)=901700000010650
+DMM IMSI DETACH INDICATION: IMSI-901700000010650
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + gsm48_rx_mm_imsi_detach_ind: now used by 2 (attached,gsm48_rx_mm_imsi_detach_ind)
 DMM IMSI DETACH for IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100
 DREF VLR subscr IMSI-901700000010650:MSISDN-42342:TMSI-0x03020100 + active-conn: now used by 3 (attached,gsm48_rx_mm_imsi_detach_ind,active-conn)