diff --git a/openbsc/src/libmgcp/mgcp_sdp.c b/openbsc/src/libmgcp/mgcp_sdp.c
new file mode 100644
index 0000000..a10b3ac
--- /dev/null
+++ b/openbsc/src/libmgcp/mgcp_sdp.c
@@ -0,0 +1,191 @@
+/*
+ * Some SDP file parsing...
+ *
+ * (C) 2009-2015 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2014 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 <openbsc/mgcp.h>
+#include <openbsc/mgcp_internal.h>
+
+#include <errno.h>
+
+int mgcp_set_audio_info(void *ctx, struct mgcp_rtp_codec *codec,
+			int payload_type, const char *audio_name)
+{
+	int rate = codec->rate;
+	int channels = codec->channels;
+	char audio_codec[64];
+
+	talloc_free(codec->subtype_name);
+	codec->subtype_name = NULL;
+	talloc_free(codec->audio_name);
+	codec->audio_name = NULL;
+
+	if (payload_type != PTYPE_UNDEFINED)
+		codec->payload_type = payload_type;
+
+	if (!audio_name) {
+		switch (payload_type) {
+		case 3: audio_name = "GSM/8000/1"; break;
+		case 8: audio_name = "PCMA/8000/1"; break;
+		case 18: audio_name = "G729/8000/1"; break;
+		default:
+			 /* Payload type is unknown, don't change rate and
+			  * channels. */
+			 /* TODO: return value? */
+			 return 0;
+		}
+	}
+
+	if (sscanf(audio_name, "%63[^/]/%d/%d",
+		   audio_codec, &rate, &channels) < 1)
+		return -EINVAL;
+
+	codec->rate = rate;
+	codec->channels = channels;
+	codec->subtype_name = talloc_strdup(ctx, audio_codec);
+	codec->audio_name = talloc_strdup(ctx, audio_name);
+
+	if (!strcmp(audio_codec, "G729")) {
+		codec->frame_duration_num = 10;
+		codec->frame_duration_den = 1000;
+	} else {
+		codec->frame_duration_num = DEFAULT_RTP_AUDIO_FRAME_DUR_NUM;
+		codec->frame_duration_den = DEFAULT_RTP_AUDIO_FRAME_DUR_DEN;
+	}
+
+	if (payload_type < 0) {
+		payload_type = 96;
+		if (rate == 8000 && channels == 1) {
+			if (!strcmp(audio_codec, "GSM"))
+				payload_type = 3;
+			else if (!strcmp(audio_codec, "PCMA"))
+				payload_type = 8;
+			else if (!strcmp(audio_codec, "G729"))
+				payload_type = 18;
+		}
+
+		codec->payload_type = payload_type;
+	}
+
+	if (channels != 1)
+		LOGP(DMGCP, LOGL_NOTICE,
+		     "Channels != 1 in SDP: '%s'\n", audio_name);
+
+	return 0;
+}
+
+
+int mgcp_parse_sdp_data(struct mgcp_rtp_end *rtp, struct mgcp_parse_data *p)
+{
+	char *line;
+	int found_media = 0;
+	/* TODO/XXX make it more generic */
+	int audio_payload = -1;
+	int audio_payload_alt = -1;
+
+	for_each_line(line, p->save) {
+		switch (line[0]) {
+		case 'o':
+		case 's':
+		case 't':
+		case 'v':
+			/* skip these SDP attributes */
+			break;
+		case 'a': {
+			int payload;
+			int ptime, ptime2 = 0;
+			char audio_name[64];
+
+			if (audio_payload == -1)
+				break;
+
+			if (sscanf(line, "a=rtpmap:%d %63s",
+				   &payload, audio_name) == 2) {
+				if (payload == audio_payload)
+					mgcp_set_audio_info(p->cfg, &rtp->codec,
+							payload, audio_name);
+				else if (payload == audio_payload_alt)
+					mgcp_set_audio_info(p->cfg, &rtp->alt_codec,
+							payload, audio_name);
+			} else if (sscanf(line, "a=ptime:%d-%d",
+					  &ptime, &ptime2) >= 1) {
+				if (ptime2 > 0 && ptime2 != ptime)
+					rtp->packet_duration_ms = 0;
+				else
+					rtp->packet_duration_ms = ptime;
+			} else if (sscanf(line, "a=maxptime:%d", &ptime2) == 1) {
+				/* TODO/XXX: Store this per codec and derive it on use */
+				if (ptime2 * rtp->codec.frame_duration_den >
+				    rtp->codec.frame_duration_num * 1500)
+					/* more than 1 frame */
+					rtp->packet_duration_ms = 0;
+			}
+			break;
+		}
+		case 'm': {
+			int port, rc;
+			audio_payload = -1;
+			audio_payload_alt = -1;
+
+			rc = sscanf(line, "m=audio %d RTP/AVP %d %d",
+				   &port, &audio_payload, &audio_payload_alt);
+			if (rc >= 2) {
+				rtp->rtp_port = htons(port);
+				rtp->rtcp_port = htons(port + 1);
+				found_media = 1;
+				mgcp_set_audio_info(p->cfg, &rtp->codec, audio_payload, NULL);
+				if (rc == 3)
+					mgcp_set_audio_info(p->cfg, &rtp->alt_codec,
+							audio_payload_alt, NULL);
+			}
+			break;
+		}
+		case 'c': {
+			char ipv4[16];
+
+			if (sscanf(line, "c=IN IP4 %15s", ipv4) == 1) {
+				inet_aton(ipv4, &rtp->addr);
+			}
+			break;
+		}
+		default:
+			if (p->endp)
+				LOGP(DMGCP, LOGL_NOTICE,
+				     "Unhandled SDP option: '%c'/%d on 0x%x\n",
+				     line[0], line[0], ENDPOINT_NUMBER(p->endp));
+			else
+				LOGP(DMGCP, LOGL_NOTICE,
+				     "Unhandled SDP option: '%c'/%d\n",
+				     line[0], line[0]);
+			break;
+		}
+	}
+
+	if (found_media)
+		LOGP(DMGCP, LOGL_NOTICE,
+		     "Got media info via SDP: port %d, payload %d (%s), "
+		     "duration %d, addr %s\n",
+		     ntohs(rtp->rtp_port), rtp->codec.payload_type,
+		     rtp->codec.subtype_name ? rtp->codec.subtype_name : "unknown",
+		     rtp->packet_duration_ms, inet_ntoa(rtp->addr));
+
+	return found_media;
+}
+