Add incoming answer to call control, also allow to send recall tone

src/amps/amps.c

@@ -940,6 +940,10 @@ inval:
 	return 0;
 }
 
+void call_out_answer(int __attribute__((unused)) callref)
+{
+}
+
 /* Call control sends disconnect (with tones).
  * An active call stays active, so tones and annoucements can be received
  * by mobile station.

src/anetz/anetz.c

@@ -437,6 +437,10 @@ inval:
 	return 0;
 }
 
+void call_out_answer(int __attribute__((unused)) callref)
+{
+}
+
 /* Call control sends disconnect (with tones).
  * An active call stays active, so tones and annoucements can be received
  * by mobile station.

src/bnetz/bnetz.c

@@ -741,6 +741,10 @@ inval:
 	return 0;
 }
 
+void call_out_answer(int __attribute__((unused)) callref)
+{
+}
+
 /* Call control sends disconnect (with tones).
  * An active call stays active, so tones and annoucements can be received
  * by mobile station.

src/cnetz/cnetz.c

@@ -589,6 +589,10 @@ inval:
 	return 0;
 }
 
+void call_out_answer(int __attribute__((unused)) callref)
+{
+}
+
 /* Call control sends disconnect (with tones).
  * An active call stays active, so tones and annoucements can be received
  * by mobile station.

src/common/call.c

@@ -61,6 +61,7 @@ int16_t *noanswer_spl = NULL;
 int16_t *outoforder_spl = NULL;
 int16_t *invalidnumber_spl = NULL;
 int16_t *congestion_spl = NULL;
+int16_t *recall_spl = NULL;
 int test_size = 0;
 int ringback_size = 0;
 int hangup_size = 0;
@@ -69,6 +70,7 @@ int noanswer_size = 0;
 int outoforder_size = 0;
 int invalidnumber_size = 0;
 int congestion_size = 0;
+int recall_size = 0;
 int test_max = 0;
 int ringback_max = 0;
 int hangup_max = 0;
@@ -77,6 +79,7 @@ int noanswer_max = 0;
 int outoforder_max = 0;
 int invalidnumber_max = 0;
 int congestion_max = 0;
+int recall_max = 0;
 
 enum call_state {
 	CALL_IDLE = 0,
@@ -106,6 +109,7 @@ enum audio_pattern {
 	PATTERN_OUTOFORDER,
 	PATTERN_INVALIDNUMBER,
 	PATTERN_CONGESTION,
+	PATTERN_RECALL,
 };
 
 void get_pattern(const int16_t **spl, int *size, int *max, enum audio_pattern pattern)
@@ -121,6 +125,7 @@ void get_pattern(const int16_t **spl, int *size, int *max, enum audio_pattern pa
 		*max = test_max;
 		break;
 	case PATTERN_RINGBACK:
+no_recall:
 		*spl = ringback_spl;
 		*size = ringback_size;
 		*max = ringback_max;
@@ -167,6 +172,13 @@ no_invalidnumber:
 		*size = congestion_size;
 		*max = congestion_max;
 		break;
+	case PATTERN_RECALL:
+		if (!recall_spl)
+			goto no_recall;
+		*spl = recall_spl;
+		*size = recall_size;
+		*max = recall_max;
+		break;
 	default:
 		;
 	}
@@ -935,6 +947,14 @@ void call_in_release(int callref, int cause)
 	call.disc_cause = cause;
 }
 
+/* turn recall tone on or off */
+void call_tone_recall(int callref, int on)
+{
+	/* can do that only with MNCC socket */
+	if (call.use_mncc_sock)
+		set_pattern_process(callref, (on) ? PATTERN_RECALL : PATTERN_NONE);
+}
+
 /* forward audio to MNCC or call instance */
 void call_tx_audio(int callref, sample_t *samples, int count)
 {
@@ -1133,6 +1153,8 @@ void call_mncc_recv(uint8_t *buf, int length)
 	case MNCC_SETUP_RSP:
 		PDEBUG(DMNCC, DEBUG_INFO, "Received MNCC answer from Network\n");
 		set_state_process(callref, CALL_CONNECT);
+		PDEBUG(DCALL, DEBUG_INFO, "Call disconnected\n");
+		call_out_answer(callref);
 		break;
 	case MNCC_DISC_REQ:
 		PDEBUG(DMNCC, DEBUG_INFO, "Received MNCC disconnect from Network with cause %d\n", mncc->cause.value);

src/common/call.h

@@ -22,9 +22,11 @@ int call_in_setup(int callref, const char *callerid, const char *dialing);
 void call_in_alerting(int callref);
 void call_in_answer(int callref, const char *connect_id);
 void call_in_release(int callref, int cause);
+void call_tone_recall(int callref, int on);
 
 /* send messages */
 int call_out_setup(int callref, const char *caller_id, enum number_type caller_type, const char *dialing);
+void call_out_answer(int callref);
 void call_out_disconnect(int callref, int cause);
 void call_out_release(int callref, int cause);
 

src/nmt/nmt.c

@@ -1802,6 +1802,10 @@ int sms_out_setup(char *dialing, const char *caller_id, enum number_type caller_
 	return _out_setup(0, caller_id, caller_type, dialing, sms);
 }
 
+void call_out_answer(int __attribute__((unused)) callref)
+{
+}
+
 /* Call control sends disconnect (with tones).
  * An active call stays active, so tones and annoucements can be received
  * by mobile station.

src/test/dummy.c

@@ -2,6 +2,7 @@ void call_rx_audio() { }
 void call_out_setup() { }
 void call_out_release() { }
 void call_out_disconnect() { }
+void call_out_answer() { }
 void print_help() { }
 void sender_send() { }
 void sender_receive() { }