[SIPForum-discussion] Can 180 carry Session SDP with it?

[alexzhang at gdnt.com.cn]

Can you list some examples about the Codec Negotiation?
 

Thanks, 
Alex  
6-554-8782 

 

________________________________

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Donald Lee
Sent: Tuesday, August 21, 2007 12:16 PM
To: Andy Chen
Cc: yiping xia; discussion at sipforum.org
Subject: Re: [SIPForum-discussion] Can 180 carry Session SDP with it?


Of course it can. precondition or other usage, such as music ringback
tone, should use the 18x taking SDP info


On 8/21/07, Andy Chen <andy.chen.zhen at gmail.com> wrote: 

	Hi
	
	18X Can carry SDP.
	
	Andy
	
	2007/8/20, yiping xia < xiayiping at iee.org
<mailto:xiayiping at iee.org> >:
	> Hi, everyone,
	> here is a scenario,
	> UE_A supports precondition,and needs resourse reservation,
	> UE_B does not support precondition,
	> UE_A sends a INVITE to UE_B, 
	> since UE_B does not support precondition,it will send a 180,
	> the question is,can 180 carry Session SDP with it in such
scenario?
	>
	> Thank you
	>
	> --
	> =============================== 
	> Yiping Xia
	> E-mail: xiayiping at iee.org
	> MSN: xyiping at hotmail.com
	> Tel:0086 25 80857626
	> Mobile:0086 13645169783 
	> M.Sc in Telecommunication and Information Systems at
University of Essex
	> B.Eng in Communication Engineering at Nanjing University of
Posts and
	> Telecommunications
	> =============================== 
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-- 
BR
Donald 
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