[SIPForum-discussion] Re-invite issue

[Steve Langstaff]

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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