Daniel,

Any further Help you can give me?

Regards,

Camila

From: Camila Troncoso [mailto:ctroncoso@redvoiss.net]
Sent: jueves, 21 de febrero de 2013 9:52
To: 'miconda@gmail.com'; 'SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing List'
Subject: RE: [SR-Users] Kamailio not increasing cseq

Hi Daniel,

In deed the Ruri is the only difference with the second invite.

For the first Invite, I received an “503 Service unavailable” from the gateway , it goues trough the SBC and it is pass to the LCR so it reroutes the call to the second gateway in the cloud.

I asked in FreeSWITCH forum for this issue and they said that the problem is Cseq not increasing, Freeswitch doesn’t take Ruri as compare.

Regards,

Camila

From: sr-users-bounces@lists.sip-router.org [mailto:sr-users-bounces@lists.sip-router.org] On Behalf Of Daniel-Constantin Mierla
Sent: jueves, 21 de febrero de 2013 5:08
To: SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing List
Subject: Re: [SR-Users] Kamailio not increasing cseq

Hello,

On 2/20/13 7:44 PM, Camila Troncoso wrote:

Hi all,

I’m working for a while with Kamailio+Freeswitch as SBC.

I have this structure:

When I make a call from one client connected to LCR, it is route to my SBC and afterwards to his destiny in the cloud passing though a gateway. When the destiny is unreachable, the LCR reroutes the call to another gateway. Sometimes the LCR send this retry again to the SBC , because the second gateway is also in the cloud, but when this happens, FreeSWITCH answer with :

“482 Request merged” because it detects that is the same call.

This is because the second INVITE has the same Call-ID and same Cseq. Kamailio is not increasing CSeq.

Is there a way to resolve this?

it is a second branch, the top via header of the second invite should have a different branch parameter than the previous one. Freeswitch should detect that and handle it as a separate branch of the call, too. Try changing the r-uri a bit and see if works (e.g., set a prefix that you remove it if set), as an workaround.

Also, is the CANCEL sent to Freeswitch for first branch? Or is Freeswitch sending a negative reply?

Cheers,
Daniel

--

Daniel-Constantin Mierla - http://www.asipto.com

http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda

Kamailio World Conference, April 16-17, 2013, Berlin

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