diff --git a/src/bnetz/bnetz.c b/src/bnetz/bnetz.c
index 6c75997..2c96d80 100644
--- a/src/bnetz/bnetz.c
+++ b/src/bnetz/bnetz.c
@@ -29,6 +29,9 @@
 #include "bnetz.h"
 #include "dsp.h"
 
+// Uncomment this to generate a dial sequnce (for testing)
+//#define GEN_DIALSEQUENCE
+
 /* Call reference for calls from mobile station to network
    This offset of 0x400000000 is required for MNCC interface. */
 static int new_callref = 0x40000000;
@@ -354,6 +357,12 @@ static void bnetz_go_idle(bnetz_t *bnetz)
 	bnetz_set_dsp_mode(bnetz, DSP_MODE_TELEGRAMM);
 	switch_channel_19(bnetz, 0);
 	bnetz->station_id[0] = '\0';
+#ifdef GEN_DIALSEQUENCE
+	if (bnetz->sender.loopback) {
+		bnetz_set_dsp_mode(bnetz, DSP_MODE_0);
+		timer_start(&bnetz->timer, 0.6);
+	}
+#endif
 }
 
 /* Release connection towards mobile station by sending release digits. */
@@ -390,10 +399,21 @@ const char *bnetz_get_telegramm(bnetz_t *bnetz)
 	struct impulstelegramme *it = NULL;
 
 	if (bnetz->sender.loopback) {
+#ifdef GEN_DIALSEQUENCE
+		char *dialstring="s50993310es50993310e", c;
+		c = dialstring[bnetz->loopback_count++];
+		if (c) {
+			it = bnetz_telegramm(c);
+		} else {
+			bnetz_set_dsp_mode(bnetz, DSP_MODE_SILENCE);
+			return NULL;
+		}
+#else
 		bnetz->loopback_time[bnetz->loopback_count] = get_time();
 		it = bnetz_telegramm(bnetz->loopback_count + '0');
 		if (++bnetz->loopback_count > 9)
 			bnetz->loopback_count = 0;
+#endif
 	} else
 	switch(bnetz->state) {
 	case BNETZ_FREI:
@@ -683,6 +703,11 @@ static void bnetz_timeout(struct timer *timer)
 	bnetz_t *bnetz = (bnetz_t *)timer->priv;
 
 	switch (bnetz->state) {
+#ifdef GEN_DIALSEQUENCE
+	case BNETZ_FREI:
+		bnetz_set_dsp_mode(bnetz, DSP_MODE_TELEGRAMM);
+		break;
+#endif
 	case BNETZ_WAHLABRUF:
 		PDEBUG(DBNETZ, DEBUG_NOTICE, "Timeout while receiving call setup from mobile station, aborting.\n");
 		bnetz_go_idle(bnetz);