mod_skinny: make 7925g work

Cisco 7925G seem to work only with the correct conference_id2 and
rtptimeout set, so add protocol 11 definition fields and set
conference_id2 correctly.
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Nathan Neulinger <nneul@neulinger.org>

src/mod/endpoints/mod_skinny/skinny_protocol.c

@@ -911,6 +911,7 @@ switch_status_t perform_send_open_receive_channel(listener_t *listener,
 	message->data.open_receive_channel.echo_cancel_type = echo_cancel_type;
 	message->data.open_receive_channel.g723_bitrate = g723_bitrate;
 	message->data.open_receive_channel.conference_id2 = conference_id2;
+	message->data.open_receive_channel.rtptimeout = htonl(0x0a);
 	/*
 	   message->data.open_receive_channel.reserved[0] = reserved[0];
 	   message->data.open_receive_channel.reserved[1] = reserved[1];

src/mod/endpoints/mod_skinny/skinny_protocol.h

@@ -683,7 +683,9 @@ struct PACKED open_receive_channel_message {
 	uint32_t echo_cancel_type;
 	uint32_t g723_bitrate;
 	uint32_t conference_id2;
-	uint32_t reserved[10];
+	uint32_t reserved[14];
+	uint32_t rtpdtmfpayload;
+	uint32_t rtptimeout;
 };
 
 /* CloseReceiveChannelMessage */

src/mod/endpoints/mod_skinny/skinny_server.c

@@ -802,7 +802,7 @@ switch_status_t skinny_session_start_media(switch_core_session_t *session, liste
 				SKINNY_CODEC_ULAW_64K, /* uint32_t payload_capacity, */
 				0, /* uint32_t echo_cancel_type, */
 				0, /* uint32_t g723_bitrate, */
-				0, /* uint32_t conference_id2, */
+				tech_pvt->call_id, /* uint32_t conference_id2, */
 				0 /* uint32_t reserved[10] */
 				);
 	}
@@ -868,7 +868,7 @@ switch_status_t skinny_session_unhold_line(switch_core_session_t *session, liste
 		SKINNY_CODEC_ULAW_64K, /* uint32_t payload_capacity, */
 		0, /* uint32_t echo_cancel_type, */
 		0, /* uint32_t g723_bitrate, */
-		0, /* uint32_t conference_id2, */
+		tech_pvt->call_id, /* uint32_t conference_id2, */
 		0 /* uint32_t reserved[10] */
 		);