Anyone any help on this.

Regards,

Nihar

From: Nihar Ranjan Deb [mailto:nihar.ranjan@microtalkgroup.com]
Sent: Wednesday, December 28, 2016 5:42 PM
To: 'sr-users@lists.sip-router.org'
Subject: BYE issue kamailio + rtpproxy "481 call leg transaction doesn't exists".

Hi All,

I am a new user of kamailio. We have setup a kamilio server with RTP proxy. Most of the features are working fine except BYE.

Say User A and B are registered in kamailio server. A (caller) connected to B(called), call established.

1. If Caller (A) disconnects the call, everything goes fine. B gets disconnected and call releases.

2. But if Called party (B) disconnects the call, A never gets disconnected. I checked trace as well, in this case caller (A) gets a BYE with B's callid. So A rejects call with "481 call leg transaction doesn't exists".

Basically A party and B party has separate dialog established with Kamilio. So they have two separate callids . All messages are exchanged correctly. Only when B party disconnects call, kamailio sends BYE to A party with B party callid.

Please help me to resolve this issue. Do let me know if any more information required.

------ INVITE--------------------------

INVITE sip:966268@*** SIP/2.0

Via: SIP/2.0/UDP 192.168.1.36:63238;branch=z9hG4bK-524287-1---e64d171ec3b0b54e;rport

Max-Forwards: 70

Contact: <sip:334031@***:8906;rinstance=ea9b5f48eb342a98>

To: <sip:966268@***>

From: "334031"<sip:334031@****>;tag=4406552c

Call-ID: 82158NzljY2NiYTA5YmI3M2U1MzQyODgwMWYwYTI3ZWJjNzc

CSeq: 2 INVITE

Allow: SUBSCRIBE, NOTIFY, INVITE, ACK, CANCEL, BYE, REFER, INFO, OPTIONS, MESSAGE

Content-Type: application/sdp

Proxy-Authorization: Digest username="334031",realm="*****",nonce="****",uri="sip:966268@***",response="***",algorithm=MD5

Supported: replaces

User-Agent: X-Lite release 4.9.6 stamp 82158

Content-Length: 334

v=0

o=- 13127393523589215 1 IN IP4 192.168.1.36

s=X-Lite release 4.9.6 stamp 82158

c=IN IP4 192.168.1.36

t=0 0

m=audio 57116 RTP/AVP 9 8 120 0 84 101

a=rtpmap:120 opus/48000/2

a=fmtp:120 useinbandfec=1; usedtx=1; maxaveragebitrate=64000

a=rtpmap:84 speex/16000

a=rtpmap:101 telephone-event/8000

a=fmtp:101 0-15

a=sendrecv

-------------------------BYE--------------------------------

BYE sip:334031@192.168.1.36:63238;rinstance=ea9b5f48eb342a98 SIP/2.0

Via: SIP/2.0/UDP ***:5060;branch=z9hG4bKa28b.a2ac8c26802cdcc8c619784643f82000.0

Via: SIP/2.0/UDP 10.0.0.1;branch=z9hG4bKsr-HqsDUwx8-phRByVr-9VwUlbcUlPcIpKo-0noY0rjI95gmMhg10qgY9mc-w5He0EJbTbkb3AZt2Yna6n4uPmqbJWEYwVKYlDTYlH*

From: <sip:966268@***>;tag=1665200125

To: "334031" <sip:334031@***>;tag=4406552c

Call-ID: !!:xePve9XKtEJ4NJJT-2hM9lsXe6RemqZPIRAa1PZf1wJ4DRx5ePRce0OwbHAY-RD4Hlya-HRweMH4N6RemHYMI9Y0tV**

CSeq: 3 BYE

Contact: <sip:10.0.0.1;line=sr-mcsjIlJcYlxcIPVo-0-8Ylb8-9bKUlPjIlxEYwbw>

Max-Forwards: 69

User-Agent: Yealink SIP-T20P 9.72.0.80

Content-Length: 0

-------------------------- 481---------------------

SIP/2.0 481 Call/Transaction Does Not Exist

Via: SIP/2.0/UDP ***:5060;branch=z9hG4bKa28b.a2ac8c26802cdcc8c619784643f82000.0;received=35.164.228.12