[SR-Users] rtpproxy and connection information field

[Dominguez Jover, Ricardo]

I have to use "r" flag. Sorry for my quick posting...

 

 

De: sr-users-bounces at lists.sip-router.org
[mailto:sr-users-bounces at lists.sip-router.org] En nombre de Dominguez
Jover, Ricardo
Enviado el: martes, 01 de marzo de 2011 13:16
Para: sr-users at lists.sip-router.org
Asunto: [SR-Users] rtpproxy and connection information field

 

 

Hi all,

I'm using rtpproxy 1.2.1 and kamailio. RTPproxy is working fine in
almost every case. However I have a problem with some call.

When softphone A using sip2sip.info account calls softphone B using my
Kamailio server account, the Kamilio receives SIP packets from IP1
(81.23.228.129). The invite packet has IP2 (81.23.228.150) in the
conecction information field (c=IN IP4 81.23.228.150):


INVITE sip:12345 at xxxxxxxx.xxx;transport=udp SIP/2.0
Record-Route: <sip:81.23.228.129;lr;ftag=d9e99adf;did=e81.3538c317>
Via: SIP/2.0/UDP 81.23.228.129;branch=z9hG4bKd14b.12802794.0
Via: SIP/2.0/UDP
192.168.xx.xx:7964;received=88.xx.xx.xx;branch=z9hG4bK-d8754z-8ba1b4b47e
37bb89-1---d8754z-;rport=7964
Max-Forwards: 69
Contact: <sip:54321 at 88.xxx.xxx.xxx:7964;transport=udp>
To: "2205"<sip:12345 at xxxxxxxx.xxx>
From: "R sip2sip"<sip:54321 at sip2sip.info>;tag=d9e99adf
Call-ID: OGE5MTFiMzljZjE0NTYxN2M0N2VkZjgzNDRhMzE2ZTA.
CSeq: 2 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE,
SUBSCRIBE, INFO
Content-Type: application/sdp
Supported: replaces
User-Agent:xxxxxxxxxxxxxxxxxxxxxxxxx
Content-Length: 279

v=0
o=- 12943454020854250 1 IN IP4 192.168.xxx.xx
s=xxxxxxxxxxxxxxxxxxxx
c=IN IP4 81.23.228.150
t=0 0
m=audio 52854 RTP/AVP 107 0 8 18 101
a=rtpmap:107 BV32/16000
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=yes
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv


Then Kamilio translates "c=" IP address to my RTPproxy IPaddress and
sends the INVITE to softphone B. After the OK softphone B  sends RTP
packets to the RTPproxy as specified in the "c=" field, however the
RTPproxy sends RTP packets to IP1 instead of send packets to IP2. How
can I tell the RTPproxy to send packets to IP2 (the one in the c=
field?)


Thanks,
Ricardo Dominguez 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sip-router.org/pipermail/sr-users/attachments/20110301/59079d95/attachment.htm>