X-Git-Url: http://git.eversberg.eu/gitweb.cgi?p=lcr.git;a=blobdiff_plain;f=gsm_bs.cpp;h=4855a5c5edcbe577f37eb971c93529e9d47ddbbf;hp=285c88f788775bda1d2c92204187f1136deaedce;hb=7f0d14c706328e1ff74fe8b8c16ae54407cc8055;hpb=97aa0881beacf536e3a2296381c055887583db8f

diff --git a/gsm_bs.cpp b/gsm_bs.cpp
index 285c88f..4855a5c 100644
--- a/gsm_bs.cpp
+++ b/gsm_bs.cpp
@@ -14,6 +14,8 @@
 
 struct lcr_gsm *gsm_bs = NULL;
 
+#define PAYLOAD_TYPE_GSM 3
+
 /*
  * DTMF stuff
  */
@@ -45,11 +47,11 @@ void generate_dtmf(void)
 /*
  * constructor
  */
-Pgsm_bs::Pgsm_bs(int type, struct mISDNport *mISDNport, char *portname, struct port_settings *settings, int channel, int exclusive, int mode) : Pgsm(type, mISDNport, portname, settings, channel, exclusive, mode)
+Pgsm_bs::Pgsm_bs(int type, char *portname, struct port_settings *settings, struct interface *interface) : Pgsm(type, portname, settings, interface)
 {
-	p_m_g_lcr_gsm = gsm_bs;
-	p_m_g_dtmf = NULL;
-	p_m_g_dtmf_index = 0;
+	p_g_lcr_gsm = gsm_bs;
+	p_g_dtmf = NULL;
+	p_g_dtmf_index = 0;
 
 	PDEBUG(DEBUG_GSM, "Created new GSMBSPort(%s).\n", portname);
 }
@@ -62,77 +64,185 @@ Pgsm_bs::~Pgsm_bs()
 	PDEBUG(DEBUG_GSM, "Destroyed GSM BS process(%s).\n", p_name);
 }
 
+static const char *media_type2name(unsigned char media_type) {
+	switch (media_type) {
+	case MEDIA_TYPE_ULAW:
+		return "PCMU";
+	case MEDIA_TYPE_ALAW:
+		return "PCMA";
+	case MEDIA_TYPE_GSM:
+		return "GSM";
+	case MEDIA_TYPE_GSM_HR:
+		return "GSM-HR";
+	case MEDIA_TYPE_GSM_EFR:
+		return "GSM-EFR";
+	case MEDIA_TYPE_AMR:
+		return "AMR";
+	}
+
+	return "UKN";
+}
+
+/* PROCEEDING INDICATION (from MS) */
+void Pgsm_bs::call_conf_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
+{
+	int media_types[8];
+	unsigned char payload_types[8];
+	int payloads = 0;
+
+	gsm_trace_header(p_interface_name, this, msg_type, DIRECTION_IN);
+	if (mncc->fields & MNCC_F_CAUSE) {
+		add_trace("cause", "coding", "%d", mncc->cause.coding);
+		add_trace("cause", "location", "%", mncc->cause.location);
+		add_trace("cause", "value", "%", mncc->cause.value);
+	}
+	end_trace();
+
+	new_state(PORT_STATE_OUT_PROCEEDING);
+
+	/* get list of offered payload types
+	 * if list ist empty, the FR V1 is selected */
+	select_payload_type(mncc, payload_types, media_types, &payloads, sizeof(payload_types));
+	/* if no given payload type is supported, we assume  */
+	if (!payloads) {
+		media_types[0] = MEDIA_TYPE_GSM;
+		payload_types[0] = PAYLOAD_TYPE_GSM;
+		payloads = 1;
+	}
+
+	/* select first payload type that matches the rtp list */
+	if (p_g_rtp_bridge) {
+		int i, j;
+
+		for (i = 0; i < p_g_rtp_payloads; i++) {
+			for (j = 0; j < payloads; j++) {
+				if (p_g_rtp_media_types[i] == media_types[j])
+					break;
+			}
+			if (j < payloads)
+				break;
+		}
+		if (i == p_g_rtp_payloads) {
+			struct lcr_msg *message;
+
+			/* payload offered by remote RTP is not supported */
+			message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_RELEASE);
+			message->param.disconnectinfo.cause = 65;
+			message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
+			message_put(message);
+			/* send release */
+			mncc = create_mncc(MNCC_REL_REQ, p_g_callref);
+			gsm_trace_header(p_interface_name, this, MNCC_REL_REQ, DIRECTION_OUT);
+			mncc->fields |= MNCC_F_CAUSE;
+			mncc->cause.coding = 3;
+			mncc->cause.location = LOCATION_PRIVATE_LOCAL;
+			mncc->cause.value = 65;
+			add_trace("cause", "coding", "%d", mncc->cause.coding);
+			add_trace("cause", "location", "%d", mncc->cause.location);
+			add_trace("cause", "value", "%d", mncc->cause.value);
+			add_trace("reason", NULL, "None of the payload types are supported by MS");
+			end_trace();
+			send_and_free_mncc(p_g_lcr_gsm, mncc->msg_type, mncc);
+			new_state(PORT_STATE_RELEASE);
+			trigger_work(&p_g_delete);
+
+			return;
+		}
+		modify_lchan(p_g_rtp_media_types[i]);
+		/* use the payload type from received rtp list, not from locally generated payload types */
+		p_g_payload_type = p_g_rtp_payload_types[i];
+	} else {
+		/* modify to first given payload */
+		modify_lchan(media_types[0]);
+		p_g_payload_type = payload_types[0];
+	}
+}
+
 /* DTMF INDICATION */
 void Pgsm_bs::start_dtmf_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
 {
-//	struct lcr_msg *message;
 	struct gsm_mncc *resp;
 
-	gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN);
+	gsm_trace_header(p_interface_name, this, msg_type, DIRECTION_IN);
 	add_trace("keypad", NULL, "%c", mncc->keypad);
 	end_trace();
 	SPRINT(p_dialinginfo.id, "%c", mncc->keypad);
 	p_dialinginfo.ntype = INFO_NTYPE_UNKNOWN;
 
 	/* send resp */
-	gsm_trace_header(p_m_mISDNport, this, MNCC_START_DTMF_RSP, DIRECTION_OUT);
+	gsm_trace_header(p_interface_name, this, MNCC_START_DTMF_RSP, DIRECTION_OUT);
 	add_trace("keypad", NULL, "%c", mncc->keypad);
 	end_trace();
-	resp = create_mncc(MNCC_START_DTMF_RSP, p_m_g_callref);
+	resp = create_mncc(MNCC_START_DTMF_RSP, p_g_callref);
 	resp->fields |= MNCC_F_KEYPAD;
 	resp->keypad = mncc->keypad;
-	send_and_free_mncc(p_m_g_lcr_gsm, resp->msg_type, resp);
-
-#if 0
-	/* send dialing information */
-	message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_INFORMATION);
-	memcpy(&message->param.information, &p_dialinginfo, sizeof(struct dialing_info));
-	message_put(message);
-#endif
-
-	/* generate DTMF tones */
-	switch (mncc->keypad) {
-		case '1': p_m_g_dtmf = dtmf_samples[0]; break;
-		case '2': p_m_g_dtmf = dtmf_samples[1]; break;
-		case '3': p_m_g_dtmf = dtmf_samples[2]; break;
-		case 'a':
-		case 'A': p_m_g_dtmf = dtmf_samples[3]; break;
-		case '4': p_m_g_dtmf = dtmf_samples[4]; break;
-		case '5': p_m_g_dtmf = dtmf_samples[5]; break;
-		case '6': p_m_g_dtmf = dtmf_samples[6]; break;
-		case 'b':
-		case 'B': p_m_g_dtmf = dtmf_samples[7]; break;
-		case '7': p_m_g_dtmf = dtmf_samples[8]; break;
-		case '8': p_m_g_dtmf = dtmf_samples[9]; break;
-		case '9': p_m_g_dtmf = dtmf_samples[10]; break;
-		case 'c':
-		case 'C': p_m_g_dtmf = dtmf_samples[11]; break;
-		case '*': p_m_g_dtmf = dtmf_samples[12]; break;
-		case '0': p_m_g_dtmf = dtmf_samples[13]; break;
-		case '#': p_m_g_dtmf = dtmf_samples[14]; break;
-		case 'd':
-		case 'D': p_m_g_dtmf = dtmf_samples[15]; break;
-	}
-	p_m_g_dtmf_index = 0;
+	send_and_free_mncc(p_g_lcr_gsm, resp->msg_type, resp);
+
+	if (p_g_rtp_bridge) {
+		/* if two members are bridged */
+		if (p_bridge && p_bridge->first && p_bridge->first->next && !p_bridge->first->next->next) {
+			class Port *remote = NULL;
+
+			/* select other member */
+			if (p_bridge->first->port == this)
+				remote = p_bridge->first->next->port;
+			if (p_bridge->first->next->port == this)
+				remote = p_bridge->first->port;
+
+			if (remote) {
+				struct lcr_msg *message;
+
+				/* send dtmf information, because we bridge RTP directly */
+				message = message_create(0, remote->p_serial, EPOINT_TO_PORT, MESSAGE_DTMF);
+				message->param.dtmf = mncc->keypad;
+				message_put(message);
+			}
+		}
+	} else {
+		/* generate DTMF tones, since we do audio forwarding inside LCR */
+		switch (mncc->keypad) {
+			case '1': p_g_dtmf = dtmf_samples[0]; break;
+			case '2': p_g_dtmf = dtmf_samples[1]; break;
+			case '3': p_g_dtmf = dtmf_samples[2]; break;
+			case 'a':
+			case 'A': p_g_dtmf = dtmf_samples[3]; break;
+			case '4': p_g_dtmf = dtmf_samples[4]; break;
+			case '5': p_g_dtmf = dtmf_samples[5]; break;
+			case '6': p_g_dtmf = dtmf_samples[6]; break;
+			case 'b':
+			case 'B': p_g_dtmf = dtmf_samples[7]; break;
+			case '7': p_g_dtmf = dtmf_samples[8]; break;
+			case '8': p_g_dtmf = dtmf_samples[9]; break;
+			case '9': p_g_dtmf = dtmf_samples[10]; break;
+			case 'c':
+			case 'C': p_g_dtmf = dtmf_samples[11]; break;
+			case '*': p_g_dtmf = dtmf_samples[12]; break;
+			case '0': p_g_dtmf = dtmf_samples[13]; break;
+			case '#': p_g_dtmf = dtmf_samples[14]; break;
+			case 'd':
+			case 'D': p_g_dtmf = dtmf_samples[15]; break;
+		}
+		p_g_dtmf_index = 0;
+	}
 }
 void Pgsm_bs::stop_dtmf_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
 {
 	struct gsm_mncc *resp;
 
-	gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN);
+	gsm_trace_header(p_interface_name, this, msg_type, DIRECTION_IN);
 	add_trace("keypad", NULL, "%c", mncc->keypad);
 	end_trace();
 
 	/* send resp */
-	gsm_trace_header(p_m_mISDNport, this, MNCC_STOP_DTMF_RSP, DIRECTION_OUT);
+	gsm_trace_header(p_interface_name, this, MNCC_STOP_DTMF_RSP, DIRECTION_OUT);
 	add_trace("keypad", NULL, "%c", mncc->keypad);
 	end_trace();
-	resp = create_mncc(MNCC_STOP_DTMF_RSP, p_m_g_callref);
+	resp = create_mncc(MNCC_STOP_DTMF_RSP, p_g_callref);
 	resp->keypad = mncc->keypad;
-	send_and_free_mncc(p_m_g_lcr_gsm, resp->msg_type, resp);
+	send_and_free_mncc(p_g_lcr_gsm, resp->msg_type, resp);
 	
 	/* stop DTMF */
-	p_m_g_dtmf = NULL;
+	p_g_dtmf = NULL;
 }
 
 /* HOLD INDICATION */
@@ -141,7 +251,7 @@ void Pgsm_bs::hold_ind(unsigned int msg_type, unsigned int callref, struct gsm_m
 	struct lcr_msg *message;
 	struct gsm_mncc *resp, *frame;
 
-	gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN);
+	gsm_trace_header(p_interface_name, this, msg_type, DIRECTION_IN);
 	end_trace();
 
 	/* notify the hold of call */
@@ -151,18 +261,18 @@ void Pgsm_bs::hold_ind(unsigned int msg_type, unsigned int callref, struct gsm_m
 	message_put(message);
 
 	/* acknowledge hold */
-	gsm_trace_header(p_m_mISDNport, this, MNCC_HOLD_CNF, DIRECTION_OUT);
+	gsm_trace_header(p_interface_name, this, MNCC_HOLD_CNF, DIRECTION_OUT);
 	end_trace();
-	resp = create_mncc(MNCC_HOLD_CNF, p_m_g_callref);
-	send_and_free_mncc(p_m_g_lcr_gsm, resp->msg_type, resp);
+	resp = create_mncc(MNCC_HOLD_CNF, p_g_callref);
+	send_and_free_mncc(p_g_lcr_gsm, resp->msg_type, resp);
 
 	/* disable audio */
-	if (p_m_g_tch_connected) { /* it should be true */
-		gsm_trace_header(p_m_mISDNport, this, MNCC_FRAME_DROP, DIRECTION_OUT);
+	if (p_g_tch_connected) { /* it should be true */
+		gsm_trace_header(p_interface_name, this, MNCC_FRAME_DROP, DIRECTION_OUT);
 		end_trace();
-		frame = create_mncc(MNCC_FRAME_DROP, p_m_g_callref);
-		send_and_free_mncc(p_m_g_lcr_gsm, frame->msg_type, frame);
-		p_m_g_tch_connected = 0;
+		frame = create_mncc(MNCC_FRAME_DROP, p_g_callref);
+		send_and_free_mncc(p_g_lcr_gsm, frame->msg_type, frame);
+		p_g_tch_connected = 0;
 	}
 }
 
@@ -173,7 +283,7 @@ void Pgsm_bs::retr_ind(unsigned int msg_type, unsigned int callref, struct gsm_m
 	struct lcr_msg *message;
 	struct gsm_mncc *resp, *frame;
 
-	gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN);
+	gsm_trace_header(p_interface_name, this, msg_type, DIRECTION_IN);
 	end_trace();
 
 	/* notify the retrieve of call */
@@ -183,42 +293,131 @@ void Pgsm_bs::retr_ind(unsigned int msg_type, unsigned int callref, struct gsm_m
 	message_put(message);
 
 	/* acknowledge retr */
-	gsm_trace_header(p_m_mISDNport, this, MNCC_RETRIEVE_CNF, DIRECTION_OUT);
+	gsm_trace_header(p_interface_name, this, MNCC_RETRIEVE_CNF, DIRECTION_OUT);
 	end_trace();
-	resp = create_mncc(MNCC_RETRIEVE_CNF, p_m_g_callref);
-	send_and_free_mncc(p_m_g_lcr_gsm, resp->msg_type, resp);
+	resp = create_mncc(MNCC_RETRIEVE_CNF, p_g_callref);
+	send_and_free_mncc(p_g_lcr_gsm, resp->msg_type, resp);
 
 	/* enable audio */
-	if (!p_m_g_tch_connected) { /* it should be true */
-		gsm_trace_header(p_m_mISDNport, this, MNCC_FRAME_RECV, DIRECTION_OUT);
+	if (!p_g_tch_connected) { /* it should be true */
+		gsm_trace_header(p_interface_name, this, MNCC_FRAME_RECV, DIRECTION_OUT);
 		end_trace();
-		frame = create_mncc(MNCC_FRAME_RECV, p_m_g_callref);
-		send_and_free_mncc(p_m_g_lcr_gsm, frame->msg_type, frame);
-		p_m_g_tch_connected = 1;
+		frame = create_mncc(MNCC_FRAME_RECV, p_g_callref);
+		send_and_free_mncc(p_g_lcr_gsm, frame->msg_type, frame);
+		p_g_tch_connected = 1;
 	}
 }
 
 /*
+ * select payload type by given list or GSM V1 FR 
+ * return the payload type or 0 if not given 
+ */
+
+void Pgsm_bs::select_payload_type(struct gsm_mncc *mncc, unsigned char *payload_types, int *media_types, int *payloads, int max_payloads)
+{
+	int media_type;
+	unsigned char payload_type;
+
+	*payloads = 0;
+
+	gsm_trace_header(p_interface_name, this, 1 /* codec negotioation */, DIRECTION_NONE);
+	if ((mncc->fields & MNCC_F_BEARER_CAP)) {
+		/* select preferred payload type from list */
+		int i;
+		unsigned char dynamic_type = 96;
+
+		add_trace("bearer", "capa", "given by MS");
+		for (i = 0; mncc->bearer_cap.speech_ver[i] >= 0; i++) {
+			/* select payload type we support */
+			switch (mncc->bearer_cap.speech_ver[i]) {
+			case 0:
+				add_trace("speech", "version", "Full Rate given");
+				media_type = MEDIA_TYPE_GSM;
+				payload_type = PAYLOAD_TYPE_GSM;
+				break;
+			case 2:
+				add_trace("speech", "version", "EFR given");
+				media_type = MEDIA_TYPE_GSM_EFR;
+				payload_type = dynamic_type++;
+				break;
+			case 4:
+				add_trace("speech", "version", "AMR given");
+				media_type = MEDIA_TYPE_AMR;
+				payload_type = dynamic_type++;
+				break;
+			case 1:
+				add_trace("speech", "version", "Half Rate given");
+				media_type = MEDIA_TYPE_GSM_HR;
+				payload_type = dynamic_type++;
+				break;
+			case 5:
+				add_trace("speech", "version", "AMR Half Rate given");
+				media_type = MEDIA_TYPE_AMR;
+				payload_type = dynamic_type++;
+				break;
+			default:
+				add_trace("speech", "version", "%d given", mncc->bearer_cap.speech_ver[i]);
+				media_type = 0;
+				payload_type = 0;
+			}
+			/* wen don't support it, so we check the next */
+			if (!media_type) {
+				add_trace("speech", "ignored", "Not supported by LCR");
+				continue;
+			}
+			if (!p_g_rtp_bridge) {
+				if (media_type != MEDIA_TYPE_GSM) {
+					add_trace("speech", "ignored", "Not suitable for LCR");
+					continue;
+				}
+			}
+			if (*payloads <= max_payloads) {
+				media_types[*payloads] = media_type;
+				payload_types[*payloads] = payload_type;
+				(*payloads)++;
+			}
+		}
+	} else {
+		add_trace("bearer", "capa", "not given by MS");
+		add_trace("speech", "version", "Full Rate given");
+		media_types[0] = MEDIA_TYPE_GSM;
+		payload_types[0] = PAYLOAD_TYPE_GSM;
+		*payloads = 1;
+	}
+	if (!(*payloads))
+		add_trace("error", "", "All given payload types unsupported");
+	end_trace();
+}
+
+/*
  * handles all indications
  */
 /* SETUP INDICATION */
 void Pgsm_bs::setup_ind(unsigned int msg_type, unsigned int callref, struct gsm_mncc *mncc)
 {
-	int ret;
 	class Endpoint *epoint;
 	struct lcr_msg *message;
-	int channel;
-	struct gsm_mncc *mode, *proceeding, *frame;
+	struct gsm_mncc *proceeding, *frame;
+	struct interface *interface;
+	int media_types[8];
+	unsigned char payload_types[8];
+	int payloads = 0;
+
+	interface = getinterfacebyname(p_interface_name);
+	if (!interface) {
+		PERROR("Cannot find interface %s.\n", p_interface_name);
+		return;
+	}
 
 	/* process given callref */
-	l1l2l3_trace_header(p_m_mISDNport, this, L3_NEW_L3ID_IND, DIRECTION_IN);
+	gsm_trace_header(p_interface_name, this, 0, DIRECTION_IN);
 	add_trace("callref", "new", "0x%x", callref);
-	if (p_m_g_callref) {
+	if (p_g_callref) {
 		/* release in case the ID is already in use */
 		add_trace("error", NULL, "callref already in use");
 		end_trace();
 		mncc = create_mncc(MNCC_REJ_REQ, callref);
-		gsm_trace_header(p_m_mISDNport, this, MNCC_REJ_REQ, DIRECTION_OUT);
+		gsm_trace_header(p_interface_name, this, MNCC_REJ_REQ, DIRECTION_OUT);
 		mncc->fields |= MNCC_F_CAUSE;
 		mncc->cause.coding = 3;
 		mncc->cause.location = 1;
@@ -228,33 +427,14 @@ void Pgsm_bs::setup_ind(unsigned int msg_type, unsigned int callref, struct gsm_
 		add_trace("cause", "value", "%d", mncc->cause.value);
 		add_trace("reason", NULL, "callref already in use");
 		end_trace();
-		send_and_free_mncc(p_m_g_lcr_gsm, mncc->msg_type, mncc);
+		send_and_free_mncc(p_g_lcr_gsm, mncc->msg_type, mncc);
 		new_state(PORT_STATE_RELEASE);
-		trigger_work(&p_m_g_delete);
+		trigger_work(&p_g_delete);
 		return;
 	}
-	p_m_g_callref = callref;
+	p_g_callref = callref;
 	end_trace();
 
-	/* if blocked, release call with MT_RELEASE_COMPLETE */
-	if (p_m_mISDNport->ifport->block) {
-		mncc = create_mncc(MNCC_REJ_REQ, p_m_g_callref);
-		gsm_trace_header(p_m_mISDNport, this, MNCC_REJ_REQ, DIRECTION_OUT);
-		mncc->fields |= MNCC_F_CAUSE;
-		mncc->cause.coding = 3;
-		mncc->cause.location = 1;
-		mncc->cause.value = 27;
-		add_trace("cause", "coding", "%d", mncc->cause.coding);
-		add_trace("cause", "location", "%d", mncc->cause.location);
-		add_trace("cause", "value", "%d", mncc->cause.value);
-		add_trace("reason", NULL, "port is blocked");
-		end_trace();
-		send_and_free_mncc(p_m_g_lcr_gsm, mncc->msg_type, mncc);
-		new_state(PORT_STATE_RELEASE);
-		trigger_work(&p_m_g_delete);
-		return;
-	}
-
 	/* caller info */
 	if (mncc->clir.inv)
 		p_callerinfo.present = INFO_PRESENT_RESTRICTED;
@@ -267,8 +447,7 @@ void Pgsm_bs::setup_ind(unsigned int msg_type, unsigned int callref, struct gsm_
 	SCPY(p_callerinfo.imsi, mncc->imsi);
 	p_callerinfo.screen = INFO_SCREEN_NETWORK;
 	p_callerinfo.ntype = INFO_NTYPE_UNKNOWN;
-	p_callerinfo.isdn_port = p_m_portnum;
-	SCPY(p_callerinfo.interface, p_m_mISDNport->ifport->interface->name);
+	SCPY(p_callerinfo.interface, p_interface_name);
 
 	/* dialing information */
 	SCAT(p_dialinginfo.id, mncc->called.number);
@@ -292,46 +471,46 @@ void Pgsm_bs::setup_ind(unsigned int msg_type, unsigned int callref, struct gsm_
 	p_dialinginfo.sending_complete = 1;
 
 	/* bearer capability */
-	// todo
 	p_capainfo.bearer_capa = INFO_BC_SPEECH;
 	p_capainfo.bearer_info1 = (options.law=='a')?3:2;
 	p_capainfo.bearer_mode = INFO_BMODE_CIRCUIT;
 	p_capainfo.source_mode = B_MODE_TRANSPARENT;
-	p_m_g_mode = p_capainfo.source_mode;
-
-	/* useruser */
-
-	/* hunt channel */
-	ret = channel = hunt_bchannel();
-	if (ret < 0)
-		goto no_channel;
-
-	/* open channel */
-	ret = seize_bchannel(channel, 1);
-	if (ret < 0) {
-		no_channel:
-		mncc = create_mncc(MNCC_REJ_REQ, p_m_g_callref);
-		gsm_trace_header(p_m_mISDNport, this, MNCC_REJ_REQ, DIRECTION_OUT);
+	p_g_mode = p_capainfo.source_mode;
+
+	/* get list of offered payload types
+	 * if list ist empty, the FR V1 is selected */
+	select_payload_type(mncc, payload_types, media_types, &payloads, sizeof(payload_types));
+	/* if no given payload type is supported, we assume  */
+	if (!payloads) {
+		media_types[0] = MEDIA_TYPE_GSM;
+		payload_types[0] = PAYLOAD_TYPE_GSM;
+		payloads = 1;
+	}
+#if 0
+	/* if no given payload type is supported, we reject the call */
+	if (!payloads) {
+		mncc = create_mncc(MNCC_REJ_REQ, callref);
+		gsm_trace_header(p_interface_name, this, MNCC_REJ_REQ, DIRECTION_OUT);
 		mncc->fields |= MNCC_F_CAUSE;
 		mncc->cause.coding = 3;
 		mncc->cause.location = 1;
-		mncc->cause.value = 34;
+		mncc->cause.value = 65;
 		add_trace("cause", "coding", "%d", mncc->cause.coding);
 		add_trace("cause", "location", "%d", mncc->cause.location);
 		add_trace("cause", "value", "%d", mncc->cause.value);
-		add_trace("reason", NULL, "no channel");
+		add_trace("reason", NULL, "Given speech codec(s) not supported");
 		end_trace();
-		send_and_free_mncc(p_m_g_lcr_gsm, mncc->msg_type, mncc);
+		send_and_free_mncc(p_g_lcr_gsm, mncc->msg_type, mncc);
 		new_state(PORT_STATE_RELEASE);
-		trigger_work(&p_m_g_delete);
+		trigger_work(&p_g_delete);
 		return;
 	}
-	bchannel_event(p_m_mISDNport, p_m_b_index, B_EVENT_USE);
-	if (bchannel_open(p_m_b_index))
-		goto no_channel;
+#endif
+
+	/* useruser */
 
 	/* what infos did we got ... */
-	gsm_trace_header(p_m_mISDNport, this, msg_type, DIRECTION_IN);
+	gsm_trace_header(p_interface_name, this, msg_type, DIRECTION_IN);
 	if (p_callerinfo.id[0])
 		add_trace("calling", "number", "%s", p_callerinfo.id);
 	else
@@ -345,22 +524,17 @@ void Pgsm_bs::setup_ind(unsigned int msg_type, unsigned int callref, struct gsm_
 		FATAL("Incoming call but already got an endpoint.\n");
 	if (!(epoint = new Endpoint(p_serial, 0)))
 		FATAL("No memory for Endpoint instance\n");
-	if (!(epoint->ep_app = new DEFAULT_ENDPOINT_APP(epoint, 0))) //incoming
-		FATAL("No memory for Endpoint Application instance\n");
+	epoint->ep_app = new_endpointapp(epoint, 0, interface->app); //incoming
 	epointlist_new(epoint->ep_serial);
 
-	/* modify lchan to GSM codec V1 */
-	gsm_trace_header(p_m_mISDNport, this, MNCC_LCHAN_MODIFY, DIRECTION_OUT);
-	mode = create_mncc(MNCC_LCHAN_MODIFY, p_m_g_callref);
-	mode->lchan_mode = 0x01; /* GSM V1 */
-	add_trace("mode", NULL, "0x%02x", mode->lchan_mode);
-	end_trace();
-	send_and_free_mncc(p_m_g_lcr_gsm, mode->msg_type, mode);
+	/* modify lchan in case of no rtp bridge */
+	if (!p_g_rtp_bridge)
+		modify_lchan(media_types[0]);
 
 	/* send call proceeding */
-	gsm_trace_header(p_m_mISDNport, this, MNCC_CALL_PROC_REQ, DIRECTION_OUT);
-	proceeding = create_mncc(MNCC_CALL_PROC_REQ, p_m_g_callref);
-	if (p_m_mISDNport->tones) {
+	gsm_trace_header(p_interface_name, this, MNCC_CALL_PROC_REQ, DIRECTION_OUT);
+	proceeding = create_mncc(MNCC_CALL_PROC_REQ, p_g_callref);
+	if (p_g_tones) {
 		proceeding->fields |= MNCC_F_PROGRESS;
 		proceeding->progress.coding = 3; /* GSM */
 		proceeding->progress.location = 1;
@@ -370,21 +544,20 @@ void Pgsm_bs::setup_ind(unsigned int msg_type, unsigned int callref, struct gsm_
 		add_trace("progress", "descr", "%d", proceeding->progress.descr);
 	}
 	end_trace();
-	send_and_free_mncc(p_m_g_lcr_gsm, proceeding->msg_type, proceeding);
+	send_and_free_mncc(p_g_lcr_gsm, proceeding->msg_type, proceeding);
 
 	new_state(PORT_STATE_IN_PROCEEDING);
 
-	if (p_m_mISDNport->tones && !p_m_g_tch_connected) { /* only if ... */
-		gsm_trace_header(p_m_mISDNport, this, MNCC_FRAME_RECV, DIRECTION_OUT);
+	if (p_g_tones && !p_g_tch_connected) { /* only if ... */
+		gsm_trace_header(p_interface_name, this, MNCC_FRAME_RECV, DIRECTION_OUT);
 		end_trace();
-		frame = create_mncc(MNCC_FRAME_RECV, p_m_g_callref);
-		send_and_free_mncc(p_m_g_lcr_gsm, frame->msg_type, frame);
-		p_m_g_tch_connected = 1;
+		frame = create_mncc(MNCC_FRAME_RECV, p_g_callref);
+		send_and_free_mncc(p_g_lcr_gsm, frame->msg_type, frame);
+		p_g_tch_connected = 1;
 	}
 
 	/* send setup message to endpoit */
 	message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_SETUP);
-	message->param.setup.isdn_port = p_m_portnum;
 	message->param.setup.port_type = p_type;
 //	message->param.setup.dtmf = 0;
 	memcpy(&message->param.setup.dialinginfo, &p_dialinginfo, sizeof(struct dialing_info));
@@ -393,7 +566,24 @@ void Pgsm_bs::setup_ind(unsigned int msg_type, unsigned int callref, struct gsm_
 	SCPY((char *)message->param.setup.useruser.data, (char *)mncc->useruser.info);
 	message->param.setup.useruser.len = strlen(mncc->useruser.info);
 	message->param.setup.useruser.protocol = mncc->useruser.proto;
-	message_put(message);
+	if (p_g_rtp_bridge) {
+		struct gsm_mncc_rtp *rtp;
+		int i;
+
+		PDEBUG(DEBUG_GSM, "Request RTP peer info, before forwarding setup\n");
+		p_g_setup_pending = message;
+		rtp = (struct gsm_mncc_rtp *) create_mncc(MNCC_RTP_CREATE, p_g_callref);
+		send_and_free_mncc(p_g_lcr_gsm, rtp->msg_type, rtp);
+
+		for (i = 0; i < (int)sizeof(message->param.setup.rtpinfo.payload_types) && i < payloads; i++) {
+			message->param.setup.rtpinfo.media_types[i] = media_types[i];
+			message->param.setup.rtpinfo.payload_types[i] = payload_types[i];
+			message->param.setup.rtpinfo.payloads++;
+		}
+
+	} else
+		message_put(message);
+
 }
 
 /*
@@ -406,7 +596,7 @@ int message_bsc(struct lcr_gsm *lcr_gsm, int msg_type, void *arg)
 	class Port *port;
 	class Pgsm_bs *pgsm_bs = NULL;
 	char name[64];
-	struct mISDNport *mISDNport;
+//	struct mISDNport *mISDNport;
 
 	/* Special messages */
 	switch(msg_type) {
@@ -418,44 +608,51 @@ int message_bsc(struct lcr_gsm *lcr_gsm, int msg_type, void *arg)
 	while(port) {
 		if ((port->p_type & PORT_CLASS_GSM_MASK) == PORT_CLASS_GSM_BS) {
 			pgsm_bs = (class Pgsm_bs *)port;
-			if (pgsm_bs->p_m_g_callref == callref) {
+			if (pgsm_bs->p_g_callref == callref) {
 				break;
 			}
 		}
 		port = port->next;
 	}
 
-	if (msg_type == GSM_TCHF_FRAME) {
+	if (msg_type == GSM_TCHF_FRAME
+	 || msg_type == GSM_BAD_FRAME) {
 		if (port) {
 			/* inject DTMF, if enabled */
-			if (pgsm_bs->p_m_g_dtmf) {
+			if (pgsm_bs->p_g_dtmf) {
 				unsigned char data[160];
 				int i;
 
 				for (i = 0; i < 160; i++) {
-					data[i] = pgsm_bs->p_m_g_dtmf[pgsm_bs->p_m_g_dtmf_index++];
-					if (pgsm_bs->p_m_g_dtmf_index == 8000)
-						pgsm_bs->p_m_g_dtmf_index = 0;
+					data[i] = pgsm_bs->p_g_dtmf[pgsm_bs->p_g_dtmf_index++];
+					if (pgsm_bs->p_g_dtmf_index == 8000)
+						pgsm_bs->p_g_dtmf_index = 0;
 				}
 				/* send */
-				pgsm_bs->bchannel_send(PH_DATA_REQ, 0, data, 160);
+				pgsm_bs->bridge_tx(data, 160);
 			} else
 				pgsm_bs->frame_receive(arg);
+			/* if we do not bridge we need to inject audio, if available */
+			if (!pgsm_bs->p_bridge || pgsm_bs->p_tone_name[0]) {
+				unsigned char data[160];
+				int i;
+
+				i = pgsm_bs->read_audio(data, 160);
+				if (i)
+					pgsm_bs->audio_send(data, i);
+			}
 		}
 		return 0;
 	}
 
 	if (!port) {
+		struct interface *interface;
+
 		if (msg_type != MNCC_SETUP_IND)
 			return(0);
-		/* find gsm port */
-		mISDNport = mISDNport_first;
-		while(mISDNport) {
-			if (mISDNport->gsm_bs)
-				break;
-			mISDNport = mISDNport->next;
-		}
-		if (!mISDNport) {
+
+		interface = getinterfacebyname(lcr_gsm->interface_name);
+		if (!interface) {
 			struct gsm_mncc *rej;
 
 			rej = create_mncc(MNCC_REJ_REQ, callref);
@@ -467,14 +664,14 @@ int message_bsc(struct lcr_gsm *lcr_gsm, int msg_type, void *arg)
 			add_trace("cause", "coding", "%d", rej->cause.coding);
 			add_trace("cause", "location", "%d", rej->cause.location);
 			add_trace("cause", "value", "%d", rej->cause.value);
+			add_trace("reason", NULL, "interface %s not found", lcr_gsm->interface_name);
 			end_trace();
 			send_and_free_mncc(lcr_gsm, rej->msg_type, rej);
 			return 0;
 		}
 		/* creating port object, transparent until setup with hdlc */
-		SPRINT(name, "%s-%d-in", mISDNport->ifport->interface->name, mISDNport->portnum);
-		if (!(pgsm_bs = new Pgsm_bs(PORT_TYPE_GSM_BS_IN, mISDNport, name, NULL, 0, 0, B_MODE_TRANSPARENT)))
-
+		SPRINT(name, "%s-%d-in", interface->name, 0);
+		if (!(pgsm_bs = new Pgsm_bs(PORT_TYPE_GSM_BS_IN, name, NULL, interface)))
 			FATAL("Cannot create Port instance.\n");
 	}
 
@@ -483,6 +680,14 @@ int message_bsc(struct lcr_gsm *lcr_gsm, int msg_type, void *arg)
 		pgsm_bs->setup_ind(msg_type, callref, mncc);
 		break;
 
+		case MNCC_RTP_CREATE:
+		pgsm_bs->rtp_create_ind(msg_type, callref, mncc);
+		break;
+
+		case MNCC_RTP_CONNECT:
+		pgsm_bs->rtp_connect_ind(msg_type, callref, mncc);
+		break;
+
 		case MNCC_START_DTMF_IND:
 		pgsm_bs->start_dtmf_ind(msg_type, callref, mncc);
 		break;
@@ -539,10 +744,8 @@ int message_bsc(struct lcr_gsm *lcr_gsm, int msg_type, void *arg)
 void Pgsm_bs::message_setup(unsigned int epoint_id, int message_id, union parameter *param)
 {
 	struct lcr_msg *message;
-	int ret;
 	struct epoint_list *epointlist;
 	struct gsm_mncc *mncc;
-	int channel;
 
 	/* copy setup infos to port */
 	memcpy(&p_callerinfo, &param->setup.callerinfo, sizeof(p_callerinfo));
@@ -551,8 +754,8 @@ void Pgsm_bs::message_setup(unsigned int epoint_id, int message_id, union parame
 	memcpy(&p_redirinfo, &param->setup.redirinfo, sizeof(p_redirinfo));
 
 	/* no GSM MNCC connection */
-	if (p_m_g_lcr_gsm->mncc_lfd.fd < 0) {
-		gsm_trace_header(p_m_mISDNport, this, MNCC_SETUP_REQ, DIRECTION_OUT);
+	if (p_g_lcr_gsm->mncc_lfd.fd < 0) {
+		gsm_trace_header(p_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
 		add_trace("failure", NULL, "No MNCC connection.");
 		end_trace();
 		message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
@@ -560,13 +763,13 @@ void Pgsm_bs::message_setup(unsigned int epoint_id, int message_id, union parame
 		message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
 		message_put(message);
 		new_state(PORT_STATE_RELEASE);
-		trigger_work(&p_m_g_delete);
+		trigger_work(&p_g_delete);
 		return;
 	}
 
 	/* no number */
 	if (!p_dialinginfo.id[0]) {
-		gsm_trace_header(p_m_mISDNport, this, MNCC_SETUP_REQ, DIRECTION_OUT);
+		gsm_trace_header(p_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
 		add_trace("failure", NULL, "No dialed subscriber given.");
 		end_trace();
 		message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
@@ -574,50 +777,51 @@ void Pgsm_bs::message_setup(unsigned int epoint_id, int message_id, union parame
 		message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
 		message_put(message);
 		new_state(PORT_STATE_RELEASE);
-		trigger_work(&p_m_g_delete);
-		return;
-	}
-	
-	/* release if port is blocked */
-	if (p_m_mISDNport->ifport->block) {
-		gsm_trace_header(p_m_mISDNport, this, MNCC_SETUP_REQ, DIRECTION_OUT);
-		add_trace("failure", NULL, "Port blocked.");
-		end_trace();
-		message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
-		message->param.disconnectinfo.cause = 27; // temp. unavail.
-		message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
-		message_put(message);
-		new_state(PORT_STATE_RELEASE);
-		trigger_work(&p_m_g_delete);
+		trigger_work(&p_g_delete);
 		return;
 	}
 
-	/* hunt channel */
-	ret = channel = hunt_bchannel();
-	if (ret < 0)
-		goto no_channel;
-	/* open channel */
-	ret = seize_bchannel(channel, 1);
-	if (ret < 0) {
-		no_channel:
-		gsm_trace_header(p_m_mISDNport, this, MNCC_SETUP_REQ, DIRECTION_OUT);
-		add_trace("failure", NULL, "No internal audio channel available.");
+	/* unsupported codec for RTP bridge */
+	if (param->setup.rtpinfo.port) {
+		int i;
+
+		p_g_rtp_payloads = 0;
+		gsm_trace_header(p_interface_name, this, 1 /* codec negotioation */, DIRECTION_NONE);
+		for (i = 0; i < param->setup.rtpinfo.payloads; i++) {
+			switch (param->setup.rtpinfo.media_types[i]) {
+			case MEDIA_TYPE_GSM:
+			case MEDIA_TYPE_GSM_EFR:
+			case MEDIA_TYPE_AMR:
+			case MEDIA_TYPE_GSM_HR:
+				add_trace("rtp", "payload", "%s:%d supported", media_type2name(param->setup.rtpinfo.media_types[i]), param->setup.rtpinfo.payload_types[i]);
+				if (p_g_rtp_payloads < (int)sizeof(p_g_rtp_payload_types)) {
+					p_g_rtp_media_types[p_g_rtp_payloads] = param->setup.rtpinfo.media_types[i];
+					p_g_rtp_payload_types[p_g_rtp_payloads] = param->setup.rtpinfo.payload_types[i];
+					p_g_rtp_payloads++;
+				}
+				break;
+			default:
+				add_trace("rtp", "payload", "%s:%d unsupported", media_type2name(param->setup.rtpinfo.media_types[i]), param->setup.rtpinfo.payload_types[i]);
+			}
+		}
 		end_trace();
-		message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
-		message->param.disconnectinfo.cause = 34;
-		message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
-		message_put(message);
-		new_state(PORT_STATE_RELEASE);
-		trigger_work(&p_m_g_delete);
-		return;
+		if (!p_g_rtp_payloads) {
+			gsm_trace_header(p_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
+			add_trace("failure", NULL, "No payload given that is supported by GSM");
+			end_trace();
+			message = message_create(p_serial, epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
+			message->param.disconnectinfo.cause = 65;
+			message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
+			message_put(message);
+			new_state(PORT_STATE_RELEASE);
+			trigger_work(&p_g_delete);
+			return;
+		}
 	}
-	bchannel_event(p_m_mISDNport, p_m_b_index, B_EVENT_USE);
-	if (bchannel_open(p_m_b_index))
-		goto no_channel;
 
 //		SCPY(&p_m_tones_dir, param->setup.ext.tones_dir);
 	/* screen outgoing caller id */
-	do_screen(1, p_callerinfo.id, sizeof(p_callerinfo.id), &p_callerinfo.ntype, &p_callerinfo.present, p_m_mISDNport->ifport->interface);
+	do_screen(1, p_callerinfo.id, sizeof(p_callerinfo.id), &p_callerinfo.ntype, &p_callerinfo.present, p_interface_name);
 
 	/* attach only if not already */
 	epointlist = p_epointlist;
@@ -630,13 +834,13 @@ void Pgsm_bs::message_setup(unsigned int epoint_id, int message_id, union parame
 		epointlist_new(epoint_id);
 
 	/* creating l3id */
-	l1l2l3_trace_header(p_m_mISDNport, this, L3_NEW_L3ID_REQ, DIRECTION_OUT);
-	p_m_g_callref = new_callref++;
-	add_trace("callref", "new", "0x%x", p_m_g_callref);
+	gsm_trace_header(p_interface_name, this, 0, DIRECTION_OUT);
+	p_g_callref = new_callref++;
+	add_trace("callref", "new", "0x%x", p_g_callref);
 	end_trace();
 
-	gsm_trace_header(p_m_mISDNport, this, MNCC_SETUP_REQ, DIRECTION_OUT);
-	mncc = create_mncc(MNCC_SETUP_REQ, p_m_g_callref);
+	gsm_trace_header(p_interface_name, this, MNCC_SETUP_REQ, DIRECTION_OUT);
+	mncc = create_mncc(MNCC_SETUP_REQ, p_g_callref);
 	/* caller information */
 	mncc->fields |= MNCC_F_CALLING;
 	mncc->calling.plan = 1;
@@ -744,18 +948,22 @@ void Pgsm_bs::message_setup(unsigned int epoint_id, int message_id, union parame
 		add_trace("redir", "screen", "%d", mncc->redirecting.screen);
 		add_trace("redir", "number", "%s", mncc->redirecting.number);
 	}
-	/* bearer capability */
-	//todo
 
 	end_trace();
-	send_and_free_mncc(p_m_g_lcr_gsm, mncc->msg_type, mncc);
+	send_and_free_mncc(p_g_lcr_gsm, mncc->msg_type, mncc);
 
 	new_state(PORT_STATE_OUT_SETUP);
 
 	message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_PROCEEDING);
 	message_put(message);
 
-	new_state(PORT_STATE_OUT_PROCEEDING);
+	/* RTP bridge */
+	if (param->setup.rtpinfo.port) {
+		p_g_rtp_bridge = 1;
+		p_g_rtp_ip_remote = param->setup.rtpinfo.ip;
+		p_g_rtp_port_remote = param->setup.rtpinfo.port;
+	} else
+		p_g_rtp_bridge = 0;
 }
 
 /*
@@ -798,11 +1006,12 @@ int gsm_bs_exit(int rc)
 	return(rc);
 }
 
-int gsm_bs_init(void)
+int gsm_bs_init(struct interface *interface)
 {
 	/* create gsm instance */
 	gsm_bs = (struct lcr_gsm *)MALLOC(sizeof(struct lcr_gsm));
 
+	SCPY(gsm_bs->interface_name, interface->name);
 	gsm_bs->type = LCR_GSM_TYPE_NETWORK;
 	gsm_bs->sun.sun_family = AF_UNIX;
 	SCPY(gsm_bs->sun.sun_path, "/tmp/bsc_mncc");