[SR-Users] Media-proxy Query

[Samir Kundu]

Hello Nandini

First of all allow me to introduce my-self to you, my name is Samir and I based in the England.

I run a small company and the main activities is building bespoke server also importing in to Europe VoIP related phones + Wi-Fi mobile handsets and ATA(s).

The reason for me to contact you, that I have notice your activity on Kamailio forum.

I am in the process establishing marketing bespoke Software(s).

My current project is a Cass 5 SoftSWITCH, which would be intended for any Telco companies providing services to end-user.

I am would be very interested in discussing with you in order to developing a carrier grade
Cass 5 SoftSWITCH for resale.

So, should you be interested in my proposition then please let me know.

Regards

Samir

Samir Kundu
3 Beechwood Terrace
Sunderland SR2 7LY, UK

Tel: +44 191 551 8486 OR +44 191 538 8280
Samir_kundu at samirkundugroup.co.uk
________________________________________
From: sr-users-bounces at lists.sip-router.org [sr-users-bounces at lists.sip-router.org] On Behalf Of Nandini madhu [sermj2012 at gmail.com]
Sent: 29 January 2014 10:48
To: sr-users at lists.sip-router.org
Subject: [SR-Users] Media-proxy Query

Dear All,
Greetings,

I have configured Kamailio (4.0.3) with mediaproxy server, with this set-up audio/video calls are going good and hence NAT issue has solved.
I have used two soft clients: 1) IMSDroid 2) Bria.
But i have a query about media-proxy statistics i.e in the syslog, the info about media-proxy activity is shown as below:

Case 1: when Call between two IMSDroid clients.

caller_codec : 'Unknown(73)'

callee_codec : 'Unknown(73)'

callee_ua : 'unknown agent'.

Case 2 : When call between two Bria clients.

'callee_ua': 'unknown agent'.

(Calls using Bria clients media-proxy's syslog shows Audio codec names, but using IMSdroid clients it is showing 'Unknown' for Audio codec names ).

Find the attachment below for the full syslog about the mentioned unknown behaviour. And also find my kamailio.cfg file.

And also logging in the syslog as shown like RTP: Unknown , RTCP: Unknown.

In this context, there is a jitter in audio calls and pixelled video sometimes, So is there any wrong with the above mentioned "unknown' factor in this problem of jitter/pixelled audio/video calls ?
(AFAIK these payload type 73 (i.e 72-76) is reserved for RTCP conflict avoidance. right? )

What could be the problem for this 'Unknown' issue?
How can i solve this issue ? Anything can be done in kamailio script?
And how these RTCP payload types (72-76) plays a role in audio/video calls?

Any suggestions will greatly help. please help me in clarifying these issues.

Thanks in advance.

Regards,
Nandini

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