create libosmo-mgcp and osmo-mgw by copying legacy code

This a cosmetic commit, copying libosmo-legacy-mgcp to libosmo-mgcp and
osmo-bsc_mgcp to osmo-mgw 1:1 at first, to provide a basis for next patches
that highlight the changes from legacy to new code.

Until osmo-msc and osmo-bsc are adjusted to operate with the new code, we will
keep the legacy code alongside the new code. The legacy code might be dropped
later.

Change-Id: Idf54481754a1765bdb2d0d7033bc0d7dc2018024
diff --git a/src/libosmo-mgcp/mgcp_vty.c b/src/libosmo-mgcp/mgcp_vty.c
new file mode 100644
index 0000000..a48e205
--- /dev/null
+++ b/src/libosmo-mgcp/mgcp_vty.c
@@ -0,0 +1,1555 @@
+/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
+/* The protocol implementation */
+
+/*
+ * (C) 2009-2014 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2011 by On-Waves
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+#include <osmocom/core/talloc.h>
+
+#include <osmocom/legacy_mgcp/mgcp.h>
+#include <osmocom/legacy_mgcp/mgcp_internal.h>
+#include <osmocom/legacy_mgcp/vty.h>
+
+#include <string.h>
+
+#define RTCP_OMIT_STR "Drop RTCP packets in both directions\n"
+#define RTP_PATCH_STR "Modify RTP packet header in both directions\n"
+#define RTP_KEEPALIVE_STR "Send dummy UDP packet to net RTP destination\n"
+
+static struct mgcp_config *g_cfg = NULL;
+
+static struct mgcp_trunk_config *find_trunk(struct mgcp_config *cfg, int nr)
+{
+	struct mgcp_trunk_config *trunk;
+
+	if (nr == 0)
+		trunk = &cfg->trunk;
+	else
+		trunk = mgcp_trunk_num(cfg, nr);
+
+	return trunk;
+}
+
+/*
+ * vty code for mgcp below
+ */
+struct cmd_node mgcp_node = {
+	MGCP_NODE,
+	"%s(config-mgcp)# ",
+	1,
+};
+
+struct cmd_node trunk_node = {
+	TRUNK_NODE,
+	"%s(config-mgcp-trunk)# ",
+	1,
+};
+
+static int config_write_mgcp(struct vty *vty)
+{
+	vty_out(vty, "mgcp%s", VTY_NEWLINE);
+	if (g_cfg->local_ip)
+		vty_out(vty, "  local ip %s%s", g_cfg->local_ip, VTY_NEWLINE);
+	if (g_cfg->bts_ip && strlen(g_cfg->bts_ip) != 0)
+		vty_out(vty, "  bts ip %s%s", g_cfg->bts_ip, VTY_NEWLINE);
+	vty_out(vty, "  bind ip %s%s", g_cfg->source_addr, VTY_NEWLINE);
+	vty_out(vty, "  bind port %u%s", g_cfg->source_port, VTY_NEWLINE);
+
+	if (g_cfg->bts_ports.mode == PORT_ALLOC_STATIC)
+		vty_out(vty, "  rtp bts-base %u%s", g_cfg->bts_ports.base_port, VTY_NEWLINE);
+	else
+		vty_out(vty, "  rtp bts-range %u %u%s",
+			g_cfg->bts_ports.range_start, g_cfg->bts_ports.range_end, VTY_NEWLINE);
+	if (g_cfg->bts_ports.bind_addr)
+		vty_out(vty, "  rtp bts-bind-ip %s%s", g_cfg->bts_ports.bind_addr, VTY_NEWLINE);
+
+	if (g_cfg->net_ports.mode == PORT_ALLOC_STATIC)
+		vty_out(vty, "  rtp net-base %u%s", g_cfg->net_ports.base_port, VTY_NEWLINE);
+	else
+		vty_out(vty, "  rtp net-range %u %u%s",
+			g_cfg->net_ports.range_start, g_cfg->net_ports.range_end, VTY_NEWLINE);
+	if (g_cfg->net_ports.bind_addr)
+		vty_out(vty, "  rtp net-bind-ip %s%s", g_cfg->net_ports.bind_addr, VTY_NEWLINE);
+
+	vty_out(vty, "  rtp ip-dscp %d%s", g_cfg->endp_dscp, VTY_NEWLINE);
+	if (g_cfg->trunk.keepalive_interval == MGCP_KEEPALIVE_ONCE)
+		vty_out(vty, "  rtp keep-alive once%s", VTY_NEWLINE);
+	else if (g_cfg->trunk.keepalive_interval)
+		vty_out(vty, "  rtp keep-alive %d%s",
+			g_cfg->trunk.keepalive_interval, VTY_NEWLINE);
+	else
+		vty_out(vty, "  no rtp keep-alive%s", VTY_NEWLINE);
+
+	if (g_cfg->trunk.omit_rtcp)
+		vty_out(vty, "  rtcp-omit%s", VTY_NEWLINE);
+	else
+		vty_out(vty, "  no rtcp-omit%s", VTY_NEWLINE);
+	if (g_cfg->trunk.force_constant_ssrc || g_cfg->trunk.force_aligned_timing) {
+		vty_out(vty, "  %srtp-patch ssrc%s",
+			g_cfg->trunk.force_constant_ssrc ? "" : "no ", VTY_NEWLINE);
+		vty_out(vty, "  %srtp-patch timestamp%s",
+			g_cfg->trunk.force_aligned_timing ? "" : "no ", VTY_NEWLINE);
+	} else
+		vty_out(vty, "  no rtp-patch%s", VTY_NEWLINE);
+	if (g_cfg->trunk.audio_payload != -1)
+		vty_out(vty, "  sdp audio-payload number %d%s",
+			g_cfg->trunk.audio_payload, VTY_NEWLINE);
+	if (g_cfg->trunk.audio_name)
+		vty_out(vty, "  sdp audio-payload name %s%s",
+			g_cfg->trunk.audio_name, VTY_NEWLINE);
+	if (g_cfg->trunk.audio_fmtp_extra)
+		vty_out(vty, "  sdp audio fmtp-extra %s%s",
+			g_cfg->trunk.audio_fmtp_extra, VTY_NEWLINE);
+	vty_out(vty, "  %ssdp audio-payload send-ptime%s",
+		g_cfg->trunk.audio_send_ptime ? "" : "no ", VTY_NEWLINE);
+	vty_out(vty, "  %ssdp audio-payload send-name%s",
+		g_cfg->trunk.audio_send_name ? "" : "no ", VTY_NEWLINE);
+	vty_out(vty, "  loop %u%s", !!g_cfg->trunk.audio_loop, VTY_NEWLINE);
+	vty_out(vty, "  number endpoints %u%s", g_cfg->trunk.number_endpoints - 1, VTY_NEWLINE);
+	vty_out(vty, "  %sallow-transcoding%s",
+		g_cfg->trunk.no_audio_transcoding ? "no " : "", VTY_NEWLINE);
+	if (g_cfg->call_agent_addr)
+		vty_out(vty, "  call-agent ip %s%s", g_cfg->call_agent_addr, VTY_NEWLINE);
+	if (g_cfg->transcoder_ip)
+		vty_out(vty, "  transcoder-mgw %s%s", g_cfg->transcoder_ip, VTY_NEWLINE);
+
+	if (g_cfg->transcoder_ports.mode == PORT_ALLOC_STATIC)
+		vty_out(vty, "  rtp transcoder-base %u%s", g_cfg->transcoder_ports.base_port, VTY_NEWLINE);
+	else
+		vty_out(vty, "  rtp transcoder-range %u %u%s",
+			g_cfg->transcoder_ports.range_start, g_cfg->transcoder_ports.range_end, VTY_NEWLINE);
+	if (g_cfg->bts_force_ptime > 0)
+		vty_out(vty, "  rtp force-ptime %d%s", g_cfg->bts_force_ptime, VTY_NEWLINE);
+	vty_out(vty, "  transcoder-remote-base %u%s", g_cfg->transcoder_remote_base, VTY_NEWLINE);
+
+	switch (g_cfg->osmux) {
+	case OSMUX_USAGE_ON:
+		vty_out(vty, "  osmux on%s", VTY_NEWLINE);
+		break;
+	case OSMUX_USAGE_ONLY:
+		vty_out(vty, "  osmux only%s", VTY_NEWLINE);
+		break;
+	case OSMUX_USAGE_OFF:
+	default:
+		vty_out(vty, "  osmux off%s", VTY_NEWLINE);
+		break;
+	}
+	if (g_cfg->osmux) {
+		vty_out(vty, "  osmux bind-ip %s%s",
+			g_cfg->osmux_addr, VTY_NEWLINE);
+		vty_out(vty, "  osmux batch-factor %d%s",
+			g_cfg->osmux_batch, VTY_NEWLINE);
+		vty_out(vty, "  osmux batch-size %u%s",
+			g_cfg->osmux_batch_size, VTY_NEWLINE);
+		vty_out(vty, "  osmux port %u%s",
+			g_cfg->osmux_port, VTY_NEWLINE);
+		vty_out(vty, "  osmux dummy %s%s",
+			g_cfg->osmux_dummy ? "on" : "off", VTY_NEWLINE);
+	}
+	return CMD_SUCCESS;
+}
+
+static void dump_rtp_end(const char *end_name, struct vty *vty,
+			struct mgcp_rtp_state *state, struct mgcp_rtp_end *end)
+{
+	struct mgcp_rtp_codec *codec = &end->codec;
+
+	vty_out(vty,
+		"  %s%s"
+		"   Timestamp Errs: %d->%d%s"
+		"   Dropped Packets: %d%s"
+		"   Payload Type: %d Rate: %u Channels: %d %s"
+		"   Frame Duration: %u Frame Denominator: %u%s"
+		"   FPP: %d Packet Duration: %u%s"
+		"   FMTP-Extra: %s Audio-Name: %s Sub-Type: %s%s"
+		"   Output-Enabled: %d Force-PTIME: %d%s",
+		end_name, VTY_NEWLINE,
+		state->in_stream.err_ts_counter,
+		state->out_stream.err_ts_counter, VTY_NEWLINE,
+		end->dropped_packets, VTY_NEWLINE,
+		codec->payload_type, codec->rate, codec->channels, VTY_NEWLINE,
+		codec->frame_duration_num, codec->frame_duration_den, VTY_NEWLINE,
+		end->frames_per_packet, end->packet_duration_ms, VTY_NEWLINE,
+		end->fmtp_extra, codec->audio_name, codec->subtype_name, VTY_NEWLINE,
+		end->output_enabled, end->force_output_ptime, VTY_NEWLINE);
+}
+
+static void dump_trunk(struct vty *vty, struct mgcp_trunk_config *cfg, int verbose)
+{
+	int i;
+
+	vty_out(vty, "%s trunk nr %d with %d endpoints:%s",
+		cfg->trunk_type == MGCP_TRUNK_VIRTUAL ? "Virtual" : "E1",
+		cfg->trunk_nr, cfg->number_endpoints - 1, VTY_NEWLINE);
+
+	if (!cfg->endpoints) {
+		vty_out(vty, "No endpoints allocated yet.%s", VTY_NEWLINE);
+		return;
+	}
+
+	for (i = 1; i < cfg->number_endpoints; ++i) {
+		struct mgcp_endpoint *endp = &cfg->endpoints[i];
+		vty_out(vty,
+			" Endpoint 0x%.2x: CI: %d net: %u/%u bts: %u/%u on %s "
+			"traffic received bts: %u  remote: %u transcoder: %u/%u%s",
+			i, endp->ci,
+			ntohs(endp->net_end.rtp_port), ntohs(endp->net_end.rtcp_port),
+			ntohs(endp->bts_end.rtp_port), ntohs(endp->bts_end.rtcp_port),
+			inet_ntoa(endp->bts_end.addr),
+			endp->bts_end.packets, endp->net_end.packets,
+			endp->trans_net.packets, endp->trans_bts.packets,
+			VTY_NEWLINE);
+
+		if (verbose && endp->allocated) {
+			dump_rtp_end("Net->BTS", vty, &endp->bts_state, &endp->bts_end);
+			dump_rtp_end("BTS->Net", vty, &endp->net_state, &endp->net_end);
+		}
+	}
+}
+
+DEFUN(show_mcgp, show_mgcp_cmd,
+      "show mgcp [stats]",
+      SHOW_STR
+      "Display information about the MGCP Media Gateway\n"
+      "Include Statistics\n")
+{
+	struct mgcp_trunk_config *trunk;
+	int show_stats = argc >= 1;
+
+	dump_trunk(vty, &g_cfg->trunk, show_stats);
+
+	llist_for_each_entry(trunk, &g_cfg->trunks, entry)
+		dump_trunk(vty, trunk, show_stats);
+
+	if (g_cfg->osmux)
+		vty_out(vty, "Osmux used CID: %d%s", osmux_used_cid(), VTY_NEWLINE);
+
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp,
+      cfg_mgcp_cmd,
+      "mgcp",
+      "Configure the MGCP")
+{
+	vty->node = MGCP_NODE;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_local_ip,
+      cfg_mgcp_local_ip_cmd,
+      "local ip A.B.C.D",
+      "Local options for the SDP record\n"
+      IP_STR
+      "IPv4 Address to use in SDP record\n")
+{
+	osmo_talloc_replace_string(g_cfg, &g_cfg->local_ip, argv[0]);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_bts_ip,
+      cfg_mgcp_bts_ip_cmd,
+      "bts ip A.B.C.D",
+      "BTS Audio source/destination options\n"
+      IP_STR
+      "IPv4 Address of the BTS\n")
+{
+	osmo_talloc_replace_string(g_cfg, &g_cfg->bts_ip, argv[0]);
+	inet_aton(g_cfg->bts_ip, &g_cfg->bts_in);
+	return CMD_SUCCESS;
+}
+
+#define BIND_STR "Listen/Bind related socket option\n"
+DEFUN(cfg_mgcp_bind_ip,
+      cfg_mgcp_bind_ip_cmd,
+      "bind ip A.B.C.D",
+      BIND_STR
+      IP_STR
+      "IPv4 Address to bind to\n")
+{
+	osmo_talloc_replace_string(g_cfg, &g_cfg->source_addr, argv[0]);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_bind_port,
+      cfg_mgcp_bind_port_cmd,
+      "bind port <0-65534>",
+      BIND_STR
+      "Port information\n"
+      "UDP port to listen for MGCP messages\n")
+{
+	unsigned int port = atoi(argv[0]);
+	g_cfg->source_port = port;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_bind_early,
+      cfg_mgcp_bind_early_cmd,
+      "bind early (0|1)",
+      BIND_STR
+      "Bind local ports on start up\n"
+      "Bind on demand\n" "Bind on startup\n")
+{
+	vty_out(vty, "bind early is deprecated, remove it from the config.\n");
+	return CMD_WARNING;
+}
+
+static void parse_base(struct mgcp_port_range *range, const char **argv)
+{
+	unsigned int port = atoi(argv[0]);
+	range->mode = PORT_ALLOC_STATIC;
+	range->base_port = port;
+}
+
+static void parse_range(struct mgcp_port_range *range, const char **argv)
+{
+	range->mode = PORT_ALLOC_DYNAMIC;
+	range->range_start = atoi(argv[0]);
+	range->range_end = atoi(argv[1]);
+	range->last_port = g_cfg->bts_ports.range_start;
+}
+
+
+#define RTP_STR "RTP configuration\n"
+#define BTS_START_STR "First UDP port allocated for the BTS side\n"
+#define NET_START_STR "First UDP port allocated for the NET side\n"
+#define UDP_PORT_STR "UDP Port number\n"
+DEFUN(cfg_mgcp_rtp_bts_base_port,
+      cfg_mgcp_rtp_bts_base_port_cmd,
+      "rtp bts-base <0-65534>",
+      RTP_STR
+      BTS_START_STR
+      UDP_PORT_STR)
+{
+	parse_base(&g_cfg->bts_ports, argv);
+	return CMD_SUCCESS;
+}
+
+#define RANGE_START_STR "Start of the range of ports\n"
+#define RANGE_END_STR "End of the range of ports\n"
+DEFUN(cfg_mgcp_rtp_bts_range,
+      cfg_mgcp_rtp_bts_range_cmd,
+      "rtp bts-range <0-65534> <0-65534>",
+      RTP_STR "Range of ports to use for the BTS side\n"
+      RANGE_START_STR RANGE_END_STR)
+{
+	parse_range(&g_cfg->bts_ports, argv);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_net_range,
+      cfg_mgcp_rtp_net_range_cmd,
+      "rtp net-range <0-65534> <0-65534>",
+      RTP_STR "Range of ports to use for the NET side\n"
+      RANGE_START_STR RANGE_END_STR)
+{
+	parse_range(&g_cfg->net_ports, argv);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_net_base_port,
+      cfg_mgcp_rtp_net_base_port_cmd,
+      "rtp net-base <0-65534>",
+      RTP_STR NET_START_STR UDP_PORT_STR)
+{
+	parse_base(&g_cfg->net_ports, argv);
+	return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_mgcp_rtp_bts_base_port, cfg_mgcp_rtp_base_port_cmd,
+      "rtp base <0-65534>",
+      RTP_STR BTS_START_STR UDP_PORT_STR)
+
+DEFUN(cfg_mgcp_rtp_transcoder_range,
+      cfg_mgcp_rtp_transcoder_range_cmd,
+      "rtp transcoder-range <0-65534> <0-65534>",
+      RTP_STR "Range of ports to use for the Transcoder\n"
+      RANGE_START_STR RANGE_END_STR)
+{
+	parse_range(&g_cfg->transcoder_ports, argv);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_transcoder_base,
+      cfg_mgcp_rtp_transcoder_base_cmd,
+      "rtp transcoder-base <0-65534>",
+      RTP_STR "First UDP port allocated for the Transcoder side\n"
+      UDP_PORT_STR)
+{
+	parse_base(&g_cfg->transcoder_ports, argv);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_bts_bind_ip,
+      cfg_mgcp_rtp_bts_bind_ip_cmd,
+      "rtp bts-bind-ip A.B.C.D",
+      RTP_STR "Bind endpoints facing the BTS\n" "Address to bind to\n")
+{
+	osmo_talloc_replace_string(g_cfg, &g_cfg->bts_ports.bind_addr, argv[0]);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_no_bts_bind_ip,
+      cfg_mgcp_rtp_no_bts_bind_ip_cmd,
+      "no rtp bts-bind-ip",
+      NO_STR RTP_STR "Bind endpoints facing the BTS\n" "Address to bind to\n")
+{
+	talloc_free(g_cfg->bts_ports.bind_addr);
+	g_cfg->bts_ports.bind_addr = NULL;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_net_bind_ip,
+      cfg_mgcp_rtp_net_bind_ip_cmd,
+      "rtp net-bind-ip A.B.C.D",
+      RTP_STR "Bind endpoints facing the Network\n" "Address to bind to\n")
+{
+	osmo_talloc_replace_string(g_cfg, &g_cfg->net_ports.bind_addr, argv[0]);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_no_net_bind_ip,
+      cfg_mgcp_rtp_no_net_bind_ip_cmd,
+      "no rtp net-bind-ip",
+      NO_STR RTP_STR "Bind endpoints facing the Network\n" "Address to bind to\n")
+{
+	talloc_free(g_cfg->net_ports.bind_addr);
+	g_cfg->net_ports.bind_addr = NULL;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_ip_dscp,
+      cfg_mgcp_rtp_ip_dscp_cmd,
+      "rtp ip-dscp <0-255>",
+      RTP_STR
+      "Apply IP_TOS to the audio stream (including Osmux)\n" "The DSCP value\n")
+{
+	int dscp = atoi(argv[0]);
+	g_cfg->endp_dscp = dscp;
+	return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_mgcp_rtp_ip_dscp, cfg_mgcp_rtp_ip_tos_cmd,
+      "rtp ip-tos <0-255>",
+      RTP_STR
+      "Apply IP_TOS to the audio stream\n" "The DSCP value\n")
+
+#define FORCE_PTIME_STR "Force a fixed ptime for packets sent to the BTS"
+DEFUN(cfg_mgcp_rtp_force_ptime,
+      cfg_mgcp_rtp_force_ptime_cmd,
+      "rtp force-ptime (10|20|40)",
+      RTP_STR FORCE_PTIME_STR
+      "The required ptime (packet duration) in ms\n"
+      "10 ms\n20 ms\n40 ms\n")
+{
+	g_cfg->bts_force_ptime = atoi(argv[0]);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_rtp_force_ptime,
+      cfg_mgcp_no_rtp_force_ptime_cmd,
+      "no rtp force-ptime",
+      NO_STR RTP_STR FORCE_PTIME_STR)
+{
+	g_cfg->bts_force_ptime = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_sdp_fmtp_extra,
+      cfg_mgcp_sdp_fmtp_extra_cmd,
+      "sdp audio fmtp-extra .NAME",
+      "Add extra fmtp for the SDP file\n" "Audio\n" "Fmtp-extra\n"
+      "Extra Information\n")
+{
+	char *txt = argv_concat(argv, argc, 0);
+	if (!txt)
+		return CMD_WARNING;
+
+	osmo_talloc_replace_string(g_cfg, &g_cfg->trunk.audio_fmtp_extra, txt);
+	talloc_free(txt);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_allow_transcoding,
+      cfg_mgcp_allow_transcoding_cmd,
+      "allow-transcoding",
+      "Allow transcoding\n")
+{
+	g_cfg->trunk.no_audio_transcoding = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_allow_transcoding,
+      cfg_mgcp_no_allow_transcoding_cmd,
+      "no allow-transcoding",
+      NO_STR "Allow transcoding\n")
+{
+	g_cfg->trunk.no_audio_transcoding = 1;
+	return CMD_SUCCESS;
+}
+
+#define SDP_STR "SDP File related options\n"
+#define AUDIO_STR "Audio payload options\n"
+DEFUN(cfg_mgcp_sdp_payload_number,
+      cfg_mgcp_sdp_payload_number_cmd,
+      "sdp audio-payload number <0-255>",
+      SDP_STR AUDIO_STR
+      "Number\n" "Payload number\n")
+{
+	unsigned int payload = atoi(argv[0]);
+	g_cfg->trunk.audio_payload = payload;
+	return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_mgcp_sdp_payload_number, cfg_mgcp_sdp_payload_number_cmd_old,
+      "sdp audio payload number <0-255>",
+      SDP_STR AUDIO_STR AUDIO_STR "Number\n" "Payload number\n")
+      
+
+DEFUN(cfg_mgcp_sdp_payload_name,
+      cfg_mgcp_sdp_payload_name_cmd,
+      "sdp audio-payload name NAME",
+      SDP_STR AUDIO_STR "Name\n" "Payload name\n")
+{
+	osmo_talloc_replace_string(g_cfg, &g_cfg->trunk.audio_name, argv[0]);
+	return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_mgcp_sdp_payload_name, cfg_mgcp_sdp_payload_name_cmd_old,
+      "sdp audio payload name NAME",
+      SDP_STR AUDIO_STR AUDIO_STR "Name\n" "Payload name\n")
+
+DEFUN(cfg_mgcp_sdp_payload_send_ptime,
+      cfg_mgcp_sdp_payload_send_ptime_cmd,
+      "sdp audio-payload send-ptime",
+      SDP_STR AUDIO_STR
+      "Send SDP ptime (packet duration) attribute\n")
+{
+	g_cfg->trunk.audio_send_ptime = 1;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_sdp_payload_send_ptime,
+      cfg_mgcp_no_sdp_payload_send_ptime_cmd,
+      "no sdp audio-payload send-ptime",
+      NO_STR SDP_STR AUDIO_STR
+      "Send SDP ptime (packet duration) attribute\n")
+{
+	g_cfg->trunk.audio_send_ptime = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_sdp_payload_send_name,
+      cfg_mgcp_sdp_payload_send_name_cmd,
+      "sdp audio-payload send-name",
+      SDP_STR AUDIO_STR
+      "Send SDP rtpmap with the audio name\n")
+{
+	g_cfg->trunk.audio_send_name = 1;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_sdp_payload_send_name,
+      cfg_mgcp_no_sdp_payload_send_name_cmd,
+      "no sdp audio-payload send-name",
+      NO_STR SDP_STR AUDIO_STR
+      "Send SDP rtpmap with the audio name\n")
+{
+	g_cfg->trunk.audio_send_name = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_loop,
+      cfg_mgcp_loop_cmd,
+      "loop (0|1)",
+      "Loop audio for all endpoints on main trunk\n"
+      "Don't Loop\n" "Loop\n")
+{
+	if (g_cfg->osmux) {
+		vty_out(vty, "Cannot use `loop' with `osmux'.%s", VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+	g_cfg->trunk.audio_loop = atoi(argv[0]);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_force_realloc,
+      cfg_mgcp_force_realloc_cmd,
+      "force-realloc (0|1)",
+      "Force endpoint reallocation when the endpoint is still seized\n"
+      "Don't force reallocation\n" "force reallocation\n")
+{
+	g_cfg->trunk.force_realloc = atoi(argv[0]);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_number_endp,
+      cfg_mgcp_number_endp_cmd,
+      "number endpoints <0-65534>",
+      "Number options\n" "Endpoints available\n" "Number endpoints\n")
+{
+	/* + 1 as we start counting at one */
+	g_cfg->trunk.number_endpoints = atoi(argv[0]) + 1;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_omit_rtcp,
+      cfg_mgcp_omit_rtcp_cmd,
+      "rtcp-omit",
+      RTCP_OMIT_STR)
+{
+	g_cfg->trunk.omit_rtcp = 1;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_omit_rtcp,
+      cfg_mgcp_no_omit_rtcp_cmd,
+      "no rtcp-omit",
+      NO_STR RTCP_OMIT_STR)
+{
+	g_cfg->trunk.omit_rtcp = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_patch_rtp_ssrc,
+      cfg_mgcp_patch_rtp_ssrc_cmd,
+      "rtp-patch ssrc",
+      RTP_PATCH_STR
+      "Force a fixed SSRC\n"
+      )
+{
+	g_cfg->trunk.force_constant_ssrc = 1;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_patch_rtp_ssrc,
+      cfg_mgcp_no_patch_rtp_ssrc_cmd,
+      "no rtp-patch ssrc",
+      NO_STR RTP_PATCH_STR
+      "Force a fixed SSRC\n"
+      )
+{
+	g_cfg->trunk.force_constant_ssrc = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_patch_rtp_ts,
+      cfg_mgcp_patch_rtp_ts_cmd,
+      "rtp-patch timestamp",
+      RTP_PATCH_STR
+      "Adjust RTP timestamp\n"
+      )
+{
+	g_cfg->trunk.force_aligned_timing = 1;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_patch_rtp_ts,
+      cfg_mgcp_no_patch_rtp_ts_cmd,
+      "no rtp-patch timestamp",
+      NO_STR RTP_PATCH_STR
+      "Adjust RTP timestamp\n"
+      )
+{
+	g_cfg->trunk.force_aligned_timing = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_patch_rtp,
+      cfg_mgcp_no_patch_rtp_cmd,
+      "no rtp-patch",
+      NO_STR RTP_PATCH_STR)
+{
+	g_cfg->trunk.force_constant_ssrc = 0;
+	g_cfg->trunk.force_aligned_timing = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_keepalive,
+      cfg_mgcp_rtp_keepalive_cmd,
+      "rtp keep-alive <1-120>",
+      RTP_STR RTP_KEEPALIVE_STR
+      "Keep alive interval in secs\n"
+      )
+{
+	mgcp_trunk_set_keepalive(&g_cfg->trunk, atoi(argv[0]));
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_rtp_keepalive_once,
+      cfg_mgcp_rtp_keepalive_once_cmd,
+      "rtp keep-alive once",
+      RTP_STR RTP_KEEPALIVE_STR
+      "Send dummy packet only once after CRCX/MDCX\n"
+      )
+{
+	mgcp_trunk_set_keepalive(&g_cfg->trunk, MGCP_KEEPALIVE_ONCE);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_rtp_keepalive,
+      cfg_mgcp_no_rtp_keepalive_cmd,
+      "no rtp keep-alive",
+      NO_STR RTP_STR RTP_KEEPALIVE_STR
+      )
+{
+	mgcp_trunk_set_keepalive(&g_cfg->trunk, 0);
+	return CMD_SUCCESS;
+}
+
+
+
+#define CALL_AGENT_STR "Callagent information\n"
+DEFUN(cfg_mgcp_agent_addr,
+      cfg_mgcp_agent_addr_cmd,
+      "call-agent ip A.B.C.D",
+      CALL_AGENT_STR IP_STR
+      "IPv4 Address of the callagent\n")
+{
+	osmo_talloc_replace_string(g_cfg, &g_cfg->call_agent_addr, argv[0]);
+	return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_mgcp_agent_addr, cfg_mgcp_agent_addr_cmd_old,
+      "call agent ip A.B.C.D",
+      CALL_AGENT_STR CALL_AGENT_STR IP_STR
+      "IPv4 Address of the callagent\n")
+      
+
+DEFUN(cfg_mgcp_transcoder,
+      cfg_mgcp_transcoder_cmd,
+      "transcoder-mgw A.B.C.D",
+      "Use a MGW to detranscoder RTP\n"
+      "The IP address of the MGW")
+{
+	osmo_talloc_replace_string(g_cfg, &g_cfg->transcoder_ip, argv[0]);
+	inet_aton(g_cfg->transcoder_ip, &g_cfg->transcoder_in);
+
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_no_transcoder,
+      cfg_mgcp_no_transcoder_cmd,
+      "no transcoder-mgw",
+      NO_STR "Disable the transcoding\n")
+{
+	if (g_cfg->transcoder_ip) {
+		LOGP(DLMGCP, LOGL_NOTICE, "Disabling transcoding on future calls.\n");
+		talloc_free(g_cfg->transcoder_ip);
+		g_cfg->transcoder_ip = NULL;
+	}
+
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_transcoder_remote_base,
+      cfg_mgcp_transcoder_remote_base_cmd,
+      "transcoder-remote-base <0-65534>",
+      "Set the base port for the transcoder\n" "The RTP base port on the transcoder")
+{
+	g_cfg->transcoder_remote_base = atoi(argv[0]);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_trunk, cfg_mgcp_trunk_cmd,
+      "trunk <1-64>",
+      "Configure a SS7 trunk\n" "Trunk Nr\n")
+{
+	struct mgcp_trunk_config *trunk;
+	int index = atoi(argv[0]);
+
+	trunk = mgcp_trunk_num(g_cfg, index);
+	if (!trunk)
+		trunk = mgcp_trunk_alloc(g_cfg, index);
+
+	if (!trunk) {
+		vty_out(vty, "%%Unable to allocate trunk %u.%s",
+			index, VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	vty->node = TRUNK_NODE;
+	vty->index = trunk;
+	return CMD_SUCCESS;
+}
+
+static int config_write_trunk(struct vty *vty)
+{
+	struct mgcp_trunk_config *trunk;
+
+	llist_for_each_entry(trunk, &g_cfg->trunks, entry) {
+		vty_out(vty, " trunk %d%s", trunk->trunk_nr, VTY_NEWLINE);
+		vty_out(vty, "  sdp audio-payload number %d%s",
+			trunk->audio_payload, VTY_NEWLINE);
+		vty_out(vty, "  sdp audio-payload name %s%s",
+			trunk->audio_name, VTY_NEWLINE);
+		vty_out(vty, "  %ssdp audio-payload send-ptime%s",
+			trunk->audio_send_ptime ? "" : "no ", VTY_NEWLINE);
+		vty_out(vty, "  %ssdp audio-payload send-name%s",
+			trunk->audio_send_name ? "" : "no ", VTY_NEWLINE);
+
+		if (trunk->keepalive_interval == MGCP_KEEPALIVE_ONCE)
+			vty_out(vty, "  rtp keep-alive once%s", VTY_NEWLINE);
+		else if (trunk->keepalive_interval)
+			vty_out(vty, "  rtp keep-alive %d%s",
+				trunk->keepalive_interval, VTY_NEWLINE);
+		else
+			vty_out(vty, "  no rtp keep-alive%s", VTY_NEWLINE);
+		vty_out(vty, "  loop %d%s",
+			trunk->audio_loop, VTY_NEWLINE);
+		vty_out(vty, "  force-realloc %d%s",
+			trunk->force_realloc, VTY_NEWLINE);
+		if (trunk->omit_rtcp)
+			vty_out(vty, "  rtcp-omit%s", VTY_NEWLINE);
+		else
+			vty_out(vty, "  no rtcp-omit%s", VTY_NEWLINE);
+		if (trunk->force_constant_ssrc || trunk->force_aligned_timing) {
+			vty_out(vty, "  %srtp-patch ssrc%s",
+				trunk->force_constant_ssrc ? "" : "no ", VTY_NEWLINE);
+			vty_out(vty, "  %srtp-patch timestamp%s",
+				trunk->force_aligned_timing ? "" : "no ", VTY_NEWLINE);
+		} else
+			vty_out(vty, "  no rtp-patch%s", VTY_NEWLINE);
+		if (trunk->audio_fmtp_extra)
+			vty_out(vty, "   sdp audio fmtp-extra %s%s",
+				trunk->audio_fmtp_extra, VTY_NEWLINE);
+		vty_out(vty, "  %sallow-transcoding%s",
+			trunk->no_audio_transcoding ? "no " : "", VTY_NEWLINE);
+	}
+
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_sdp_fmtp_extra,
+      cfg_trunk_sdp_fmtp_extra_cmd,
+      "sdp audio fmtp-extra .NAME",
+      "Add extra fmtp for the SDP file\n" "Audio\n" "Fmtp-extra\n"
+      "Extra Information\n")
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	char *txt = argv_concat(argv, argc, 0);
+	if (!txt)
+		return CMD_WARNING;
+
+	osmo_talloc_replace_string(g_cfg, &trunk->audio_fmtp_extra, txt);
+	talloc_free(txt);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_payload_number,
+      cfg_trunk_payload_number_cmd,
+      "sdp audio-payload number <0-255>",
+      SDP_STR AUDIO_STR "Number\n" "Payload Number\n")
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	unsigned int payload = atoi(argv[0]);
+
+	trunk->audio_payload = payload;
+	return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_trunk_payload_number, cfg_trunk_payload_number_cmd_old,
+      "sdp audio payload number <0-255>",
+      SDP_STR AUDIO_STR AUDIO_STR "Number\n" "Payload Number\n")
+
+DEFUN(cfg_trunk_payload_name,
+      cfg_trunk_payload_name_cmd,
+      "sdp audio-payload name NAME",
+       SDP_STR AUDIO_STR "Payload\n" "Payload Name\n")
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+
+	osmo_talloc_replace_string(g_cfg, &trunk->audio_name, argv[0]);
+	return CMD_SUCCESS;
+}
+
+ALIAS_DEPRECATED(cfg_trunk_payload_name, cfg_trunk_payload_name_cmd_old,
+      "sdp audio payload name NAME",
+       SDP_STR AUDIO_STR AUDIO_STR "Payload\n" "Payload Name\n")
+
+
+DEFUN(cfg_trunk_loop,
+      cfg_trunk_loop_cmd,
+      "loop (0|1)",
+      "Loop audio for all endpoints on this trunk\n"
+      "Don't Loop\n" "Loop\n")
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+
+	if (g_cfg->osmux) {
+		vty_out(vty, "Cannot use `loop' with `osmux'.%s", VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+	trunk->audio_loop = atoi(argv[0]);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_sdp_payload_send_ptime,
+      cfg_trunk_sdp_payload_send_ptime_cmd,
+      "sdp audio-payload send-ptime",
+      SDP_STR AUDIO_STR
+      "Send SDP ptime (packet duration) attribute\n")
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	trunk->audio_send_ptime = 1;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_sdp_payload_send_ptime,
+      cfg_trunk_no_sdp_payload_send_ptime_cmd,
+      "no sdp audio-payload send-ptime",
+      NO_STR SDP_STR AUDIO_STR
+      "Send SDP ptime (packet duration) attribute\n")
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	trunk->audio_send_ptime = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_sdp_payload_send_name,
+      cfg_trunk_sdp_payload_send_name_cmd,
+      "sdp audio-payload send-name",
+      SDP_STR AUDIO_STR
+      "Send SDP rtpmap with the audio name\n")
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	trunk->audio_send_name = 1;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_sdp_payload_send_name,
+      cfg_trunk_no_sdp_payload_send_name_cmd,
+      "no sdp audio-payload send-name",
+      NO_STR SDP_STR AUDIO_STR
+      "Send SDP rtpmap with the audio name\n")
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	trunk->audio_send_name = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_omit_rtcp,
+      cfg_trunk_omit_rtcp_cmd,
+      "rtcp-omit",
+      RTCP_OMIT_STR)
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	trunk->omit_rtcp = 1;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_omit_rtcp,
+      cfg_trunk_no_omit_rtcp_cmd,
+      "no rtcp-omit",
+      NO_STR RTCP_OMIT_STR)
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	trunk->omit_rtcp = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_patch_rtp_ssrc,
+      cfg_trunk_patch_rtp_ssrc_cmd,
+      "rtp-patch ssrc",
+      RTP_PATCH_STR
+      "Force a fixed SSRC\n"
+      )
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	trunk->force_constant_ssrc = 1;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_patch_rtp_ssrc,
+      cfg_trunk_no_patch_rtp_ssrc_cmd,
+      "no rtp-patch ssrc",
+      NO_STR RTP_PATCH_STR
+      "Force a fixed SSRC\n"
+      )
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	trunk->force_constant_ssrc = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_patch_rtp_ts,
+      cfg_trunk_patch_rtp_ts_cmd,
+      "rtp-patch timestamp",
+      RTP_PATCH_STR
+      "Adjust RTP timestamp\n"
+      )
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	trunk->force_aligned_timing = 1;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_patch_rtp_ts,
+      cfg_trunk_no_patch_rtp_ts_cmd,
+      "no rtp-patch timestamp",
+      NO_STR RTP_PATCH_STR
+      "Adjust RTP timestamp\n"
+      )
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	trunk->force_aligned_timing = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_patch_rtp,
+      cfg_trunk_no_patch_rtp_cmd,
+      "no rtp-patch",
+      NO_STR RTP_PATCH_STR)
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	trunk->force_constant_ssrc = 0;
+	trunk->force_aligned_timing = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_rtp_keepalive,
+      cfg_trunk_rtp_keepalive_cmd,
+      "rtp keep-alive <1-120>",
+      RTP_STR RTP_KEEPALIVE_STR
+      "Keep-alive interval in secs\n"
+      )
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	mgcp_trunk_set_keepalive(trunk, atoi(argv[0]));
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_rtp_keepalive_once,
+      cfg_trunk_rtp_keepalive_once_cmd,
+      "rtp keep-alive once",
+      RTP_STR RTP_KEEPALIVE_STR
+      "Send dummy packet only once after CRCX/MDCX\n"
+      )
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	mgcp_trunk_set_keepalive(trunk, MGCP_KEEPALIVE_ONCE);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_rtp_keepalive,
+      cfg_trunk_no_rtp_keepalive_cmd,
+      "no rtp keep-alive",
+      NO_STR RTP_STR RTP_KEEPALIVE_STR
+      )
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	mgcp_trunk_set_keepalive(trunk, 0);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_allow_transcoding,
+      cfg_trunk_allow_transcoding_cmd,
+      "allow-transcoding",
+      "Allow transcoding\n")
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	trunk->no_audio_transcoding = 0;
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_trunk_no_allow_transcoding,
+      cfg_trunk_no_allow_transcoding_cmd,
+      "no allow-transcoding",
+      NO_STR "Allow transcoding\n")
+{
+	struct mgcp_trunk_config *trunk = vty->index;
+	trunk->no_audio_transcoding = 1;
+	return CMD_SUCCESS;
+}
+
+DEFUN(loop_endp,
+      loop_endp_cmd,
+      "loop-endpoint <0-64> NAME (0|1)",
+      "Loop a given endpoint\n" "Trunk number\n"
+      "The name in hex of the endpoint\n" "Disable the loop\n" "Enable the loop\n")
+{
+	struct mgcp_trunk_config *trunk;
+	struct mgcp_endpoint *endp;
+
+	trunk = find_trunk(g_cfg, atoi(argv[0]));
+	if (!trunk) {
+		vty_out(vty, "%%Trunk %d not found in the config.%s",
+			atoi(argv[0]), VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	if (!trunk->endpoints) {
+		vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
+			trunk->trunk_nr, VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	int endp_no = strtoul(argv[1], NULL, 16);
+	if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
+		vty_out(vty, "Loopback number %s/%d is invalid.%s",
+		argv[1], endp_no, VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+
+	endp = &trunk->endpoints[endp_no];
+	int loop = atoi(argv[2]);
+
+	if (loop)
+		endp->conn_mode = MGCP_CONN_LOOPBACK;
+	else
+		endp->conn_mode = endp->orig_mode;
+
+	/* Handle it like a MDCX, switch on SSRC patching if enabled */
+	mgcp_rtp_end_config(endp, 1, &endp->bts_end);
+	mgcp_rtp_end_config(endp, 1, &endp->net_end);
+
+	return CMD_SUCCESS;
+}
+
+DEFUN(tap_call,
+      tap_call_cmd,
+      "tap-call <0-64> ENDPOINT (bts-in|bts-out|net-in|net-out) A.B.C.D <0-65534>",
+      "Forward data on endpoint to a different system\n" "Trunk number\n"
+      "The endpoint in hex\n"
+      "Forward the data coming from the bts\n"
+      "Forward the data coming from the bts leaving to the network\n"
+      "Forward the data coming from the net\n"
+      "Forward the data coming from the net leaving to the bts\n"
+      "destination IP of the data\n" "destination port\n")
+{
+	struct mgcp_rtp_tap *tap;
+	struct mgcp_trunk_config *trunk;
+	struct mgcp_endpoint *endp;
+	int port = 0;
+
+	trunk = find_trunk(g_cfg, atoi(argv[0]));
+	if (!trunk) {
+		vty_out(vty, "%%Trunk %d not found in the config.%s",
+			atoi(argv[0]), VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	if (!trunk->endpoints) {
+		vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
+			trunk->trunk_nr, VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	int endp_no = strtoul(argv[1], NULL, 16);
+	if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
+		vty_out(vty, "Endpoint number %s/%d is invalid.%s",
+		argv[1], endp_no, VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	endp = &trunk->endpoints[endp_no];
+
+	if (strcmp(argv[2], "bts-in") == 0) {
+		port = MGCP_TAP_BTS_IN;
+	} else if (strcmp(argv[2], "bts-out") == 0) {
+		port = MGCP_TAP_BTS_OUT;
+	} else if (strcmp(argv[2], "net-in") == 0) {
+		port = MGCP_TAP_NET_IN;
+	} else if (strcmp(argv[2], "net-out") == 0) {
+		port = MGCP_TAP_NET_OUT;
+	} else {
+		vty_out(vty, "Unknown mode... tricked vty?%s", VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	tap = &endp->taps[port];
+	memset(&tap->forward, 0, sizeof(tap->forward));
+	inet_aton(argv[3], &tap->forward.sin_addr);
+	tap->forward.sin_port = htons(atoi(argv[4]));
+	tap->enabled = 1;
+	return CMD_SUCCESS;
+}
+
+DEFUN(free_endp, free_endp_cmd,
+      "free-endpoint <0-64> NUMBER",
+      "Free the given endpoint\n" "Trunk number\n"
+      "Endpoint number in hex.\n")
+{
+	struct mgcp_trunk_config *trunk;
+	struct mgcp_endpoint *endp;
+
+	trunk = find_trunk(g_cfg, atoi(argv[0]));
+	if (!trunk) {
+		vty_out(vty, "%%Trunk %d not found in the config.%s",
+			atoi(argv[0]), VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	if (!trunk->endpoints) {
+		vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
+			trunk->trunk_nr, VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	int endp_no = strtoul(argv[1], NULL, 16);
+	if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
+		vty_out(vty, "Endpoint number %s/%d is invalid.%s",
+		argv[1], endp_no, VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	endp = &trunk->endpoints[endp_no];
+	mgcp_release_endp(endp);
+	return CMD_SUCCESS;
+}
+
+DEFUN(reset_endp, reset_endp_cmd,
+      "reset-endpoint <0-64> NUMBER",
+      "Reset the given endpoint\n" "Trunk number\n"
+      "Endpoint number in hex.\n")
+{
+	struct mgcp_trunk_config *trunk;
+	struct mgcp_endpoint *endp;
+	int endp_no, rc;
+
+	trunk = find_trunk(g_cfg, atoi(argv[0]));
+	if (!trunk) {
+		vty_out(vty, "%%Trunk %d not found in the config.%s",
+			atoi(argv[0]), VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	if (!trunk->endpoints) {
+		vty_out(vty, "%%Trunk %d has no endpoints allocated.%s",
+			trunk->trunk_nr, VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	endp_no = strtoul(argv[1], NULL, 16);
+	if (endp_no < 1 || endp_no >= trunk->number_endpoints) {
+		vty_out(vty, "Endpoint number %s/%d is invalid.%s",
+		argv[1], endp_no, VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	endp = &trunk->endpoints[endp_no];
+	rc = mgcp_send_reset_ep(endp, ENDPOINT_NUMBER(endp));
+	if (rc < 0) {
+		vty_out(vty, "Error %d sending reset.%s", rc, VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+	return CMD_SUCCESS;
+}
+
+DEFUN(reset_all_endp, reset_all_endp_cmd,
+      "reset-all-endpoints",
+      "Reset all endpoints\n")
+{
+	int rc;
+
+	rc = mgcp_send_reset_all(g_cfg);
+	if (rc < 0) {
+		vty_out(vty, "Error %d during endpoint reset.%s",
+			rc, VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+	return CMD_SUCCESS;
+}
+
+#define OSMUX_STR "RTP multiplexing\n"
+DEFUN(cfg_mgcp_osmux,
+      cfg_mgcp_osmux_cmd,
+      "osmux (on|off|only)",
+       OSMUX_STR "Enable OSMUX\n" "Disable OSMUX\n" "Only use OSMUX\n")
+{
+	if (strcmp(argv[0], "off") == 0) {
+		g_cfg->osmux = OSMUX_USAGE_OFF;
+		return CMD_SUCCESS;
+	}
+
+	if (strcmp(argv[0], "on") == 0)
+		g_cfg->osmux = OSMUX_USAGE_ON;
+	else if (strcmp(argv[0], "only") == 0)
+		g_cfg->osmux = OSMUX_USAGE_ONLY;
+
+	if (g_cfg->trunk.audio_loop) {
+		vty_out(vty, "Cannot use `loop' with `osmux'.%s",
+			VTY_NEWLINE);
+		return CMD_WARNING;
+	}
+
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_ip,
+      cfg_mgcp_osmux_ip_cmd,
+      "osmux bind-ip A.B.C.D",
+      OSMUX_STR IP_STR "IPv4 Address to bind to\n")
+{
+	osmo_talloc_replace_string(g_cfg, &g_cfg->osmux_addr, argv[0]);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_batch_factor,
+      cfg_mgcp_osmux_batch_factor_cmd,
+      "osmux batch-factor <1-8>",
+      OSMUX_STR "Batching factor\n" "Number of messages in the batch\n")
+{
+	g_cfg->osmux_batch = atoi(argv[0]);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_batch_size,
+      cfg_mgcp_osmux_batch_size_cmd,
+      "osmux batch-size <1-65535>",
+      OSMUX_STR "batch size\n" "Batch size in bytes\n")
+{
+	g_cfg->osmux_batch_size = atoi(argv[0]);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_port,
+      cfg_mgcp_osmux_port_cmd,
+      "osmux port <1-65535>",
+      OSMUX_STR "port\n" "UDP port\n")
+{
+	g_cfg->osmux_port = atoi(argv[0]);
+	return CMD_SUCCESS;
+}
+
+DEFUN(cfg_mgcp_osmux_dummy,
+      cfg_mgcp_osmux_dummy_cmd,
+      "osmux dummy (on|off)",
+      OSMUX_STR "Dummy padding\n" "Enable dummy padding\n" "Disable dummy padding\n")
+{
+	if (strcmp(argv[0], "on") == 0)
+		g_cfg->osmux_dummy = 1;
+	else if (strcmp(argv[0], "off") == 0)
+		g_cfg->osmux_dummy = 0;
+
+	return CMD_SUCCESS;
+}
+
+int mgcp_vty_init(void)
+{
+	install_element_ve(&show_mgcp_cmd);
+	install_element(ENABLE_NODE, &loop_endp_cmd);
+	install_element(ENABLE_NODE, &tap_call_cmd);
+	install_element(ENABLE_NODE, &free_endp_cmd);
+	install_element(ENABLE_NODE, &reset_endp_cmd);
+	install_element(ENABLE_NODE, &reset_all_endp_cmd);
+
+	install_element(CONFIG_NODE, &cfg_mgcp_cmd);
+	install_node(&mgcp_node, config_write_mgcp);
+
+	vty_install_default(MGCP_NODE);
+	install_element(MGCP_NODE, &cfg_mgcp_local_ip_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_bts_ip_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_bind_ip_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_bind_port_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_bind_early_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_base_port_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_bts_base_port_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_net_base_port_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_bts_range_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_bts_bind_ip_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_no_bts_bind_ip_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_net_range_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_net_bind_ip_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_no_net_bind_ip_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_transcoder_range_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_transcoder_base_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_ip_dscp_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_ip_tos_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_force_ptime_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_no_rtp_force_ptime_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_keepalive_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_rtp_keepalive_once_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_no_rtp_keepalive_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_agent_addr_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_agent_addr_cmd_old);
+	install_element(MGCP_NODE, &cfg_mgcp_transcoder_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_no_transcoder_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_transcoder_remote_base_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_number_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_name_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_number_cmd_old);
+	install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_name_cmd_old);
+	install_element(MGCP_NODE, &cfg_mgcp_loop_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_force_realloc_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_number_endp_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_omit_rtcp_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_no_omit_rtcp_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_patch_rtp_ssrc_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_no_patch_rtp_ssrc_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_patch_rtp_ts_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_no_patch_rtp_ts_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_no_patch_rtp_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_sdp_fmtp_extra_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_send_ptime_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_no_sdp_payload_send_ptime_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_sdp_payload_send_name_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_no_sdp_payload_send_name_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_osmux_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_osmux_ip_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_osmux_batch_factor_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_osmux_batch_size_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_osmux_port_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_osmux_dummy_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_allow_transcoding_cmd);
+	install_element(MGCP_NODE, &cfg_mgcp_no_allow_transcoding_cmd);
+
+
+	install_element(MGCP_NODE, &cfg_mgcp_trunk_cmd);
+	install_node(&trunk_node, config_write_trunk);
+	vty_install_default(TRUNK_NODE);
+	install_element(TRUNK_NODE, &cfg_trunk_rtp_keepalive_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_rtp_keepalive_once_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_no_rtp_keepalive_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_payload_number_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_payload_name_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_payload_number_cmd_old);
+	install_element(TRUNK_NODE, &cfg_trunk_payload_name_cmd_old);
+	install_element(TRUNK_NODE, &cfg_trunk_loop_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_omit_rtcp_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_no_omit_rtcp_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_patch_rtp_ssrc_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_no_patch_rtp_ssrc_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_patch_rtp_ts_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_no_patch_rtp_ts_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_no_patch_rtp_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_sdp_fmtp_extra_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_sdp_payload_send_ptime_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_no_sdp_payload_send_ptime_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_sdp_payload_send_name_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_no_sdp_payload_send_name_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_allow_transcoding_cmd);
+	install_element(TRUNK_NODE, &cfg_trunk_no_allow_transcoding_cmd);
+
+	return 0;
+}
+
+static int allocate_trunk(struct mgcp_trunk_config *trunk)
+{
+	int i;
+	struct mgcp_config *cfg = trunk->cfg;
+
+	if (mgcp_endpoints_allocate(trunk) != 0) {
+		LOGP(DLMGCP, LOGL_ERROR,
+		     "Failed to allocate %d endpoints on trunk %d.\n",
+		     trunk->number_endpoints, trunk->trunk_nr);
+		return -1;
+	}
+
+	/* early bind */
+	for (i = 1; i < trunk->number_endpoints; ++i) {
+		struct mgcp_endpoint *endp = &trunk->endpoints[i];
+
+		if (cfg->bts_ports.mode == PORT_ALLOC_STATIC) {
+			cfg->last_bts_port += 2;
+			if (mgcp_bind_bts_rtp_port(endp, cfg->last_bts_port) != 0) {
+				LOGP(DLMGCP, LOGL_FATAL,
+				     "Failed to bind: %d\n", cfg->last_bts_port);
+				return -1;
+			}
+			endp->bts_end.local_alloc = PORT_ALLOC_STATIC;
+		}
+
+		if (cfg->net_ports.mode == PORT_ALLOC_STATIC) {
+			cfg->last_net_port += 2;
+			if (mgcp_bind_net_rtp_port(endp, cfg->last_net_port) != 0) {
+				LOGP(DLMGCP, LOGL_FATAL,
+				     "Failed to bind: %d\n", cfg->last_net_port);
+				return -1;
+			}
+			endp->net_end.local_alloc = PORT_ALLOC_STATIC;
+		}
+
+		if (trunk->trunk_type == MGCP_TRUNK_VIRTUAL &&
+		    cfg->transcoder_ip && cfg->transcoder_ports.mode == PORT_ALLOC_STATIC) {
+			int rtp_port;
+
+			/* network side */
+			rtp_port = rtp_calculate_port(ENDPOINT_NUMBER(endp),
+						      cfg->transcoder_ports.base_port);
+			if (mgcp_bind_trans_net_rtp_port(endp, rtp_port) != 0) {
+				LOGP(DLMGCP, LOGL_FATAL, "Failed to bind: %d\n", rtp_port);
+				return -1;
+			}
+			endp->trans_net.local_alloc = PORT_ALLOC_STATIC;
+
+			/* bts side */
+			rtp_port = rtp_calculate_port(endp_back_channel(ENDPOINT_NUMBER(endp)),
+						      cfg->transcoder_ports.base_port);
+			if (mgcp_bind_trans_bts_rtp_port(endp, rtp_port) != 0) {
+				LOGP(DLMGCP, LOGL_FATAL, "Failed to bind: %d\n", rtp_port);
+				return -1;
+			}
+			endp->trans_bts.local_alloc = PORT_ALLOC_STATIC;
+		}
+	}
+
+	return 0;
+}
+
+int mgcp_parse_config(const char *config_file, struct mgcp_config *cfg,
+		      enum mgcp_role role)
+{
+	int rc;
+	struct mgcp_trunk_config *trunk;
+
+	cfg->osmux_port = OSMUX_PORT;
+	cfg->osmux_batch = 4;
+	cfg->osmux_batch_size = OSMUX_BATCH_DEFAULT_MAX;
+
+	g_cfg = cfg;
+	rc = vty_read_config_file(config_file, NULL);
+	if (rc < 0) {
+		fprintf(stderr, "Failed to parse the config file: '%s'\n", config_file);
+		return rc;
+	}
+
+
+	if (!g_cfg->bts_ip)
+		fprintf(stderr, "No BTS ip address specified. This will allow everyone to connect.\n");
+
+	if (!g_cfg->source_addr) {
+		fprintf(stderr, "You need to specify a bind address.\n");
+		return -1;
+	}
+
+	/* initialize the last ports */
+	g_cfg->last_bts_port = rtp_calculate_port(0, g_cfg->bts_ports.base_port);
+	g_cfg->last_net_port = rtp_calculate_port(0, g_cfg->net_ports.base_port);
+
+	if (allocate_trunk(&g_cfg->trunk) != 0) {
+		LOGP(DLMGCP, LOGL_ERROR, "Failed to initialize the virtual trunk.\n");
+		return -1;
+	}
+
+	llist_for_each_entry(trunk, &g_cfg->trunks, entry) {
+		if (allocate_trunk(trunk) != 0) {
+			LOGP(DLMGCP, LOGL_ERROR,
+			     "Failed to initialize E1 trunk %d.\n", trunk->trunk_nr);
+			return -1;
+		}
+	}
+	cfg->role = role;
+
+	return 0;
+}
+