[SIPForum-discussion] Re-invite issue

[Mark Holloway]

You're sure the re-invite is because of the codec and not the way the
feature server is configured?  Some feature servers such as BroadWorks let
turn re-invites on/off.  Thought I'd check before pursuing further.

 

 

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Steve Langstaff
Sent: Tuesday, January 22, 2008 8:56 AM
To: Deepesh singh; discussion at sipforum.org
Subject: Re: [SIPForum-discussion] Re-invite issue

 

You say that Bob can support only one codec (PCMU) but he appears to be
advertising support for codecs 0 and 4

(though he isn't sending back an rtpmap line for codec 4) - could that be
the problem?

 

Maybe you could include the SDP details of the re-invite, as well as the
initial invite?

 

  _____  

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Deepesh singh
Sent: 22 January 2008 15:42
To: discussion at sipforum.org
Subject: [SIPForum-discussion] Re-invite issue

Hi,

 

Can you please advise?

 

Refering to section 10.2 

One of N Codec Selection

Is reinvite needed in this scenario?

 

 

   v=0
   o=alice 2890844526 2890844526 IN IP4 host.anywhere.com
   s=
   c=IN IP4 host.anywhere.com
   t=0 0
   m=audio 62986 RTP/AVP 0 4 18
   a=rtpmap:0 PCMU/8000
   a=rtpmap:4 G723/8000
   a=rtpmap:18 G729/8000
   a=sendrecv

   Bob can support  only one codec PCMU and sends  back.

   v=0
   o=bob 2890844730 2890844731 IN IP4 host.example.com
   s=
   c=IN IP4 host.example.com
   t=0 0
   m=audio 54344 RTP/AVP 0 4
   a=rtpmap:0 PCMU/8000
   a=sendrecv

   Of course, if Bob only supports one-of-N codecs, there
   would only be one codec in his answer, and in this case, there is no
   need for a re-INVITE to lock down to a single codec.

But I am seeing RE-INVITE? There is not a need according to RFC but if we do
have RE-invite should it matter?

 

Best regards,

Deepesh 

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