Subject: Re: [sipcore] About RFC3911(Join header)'s potential error: //Join header in REFER?

From: [email-masked]
Date: Tue, 12 Oct 2010 16:51:22 +0800

Dale,

I'd like to emphasize that the instruction of the which media streams 
should be in the INVITE_with_Join from the Refer-By party to the Refer-To 
party is quit important.

Thanks,

Gao

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----- 转发人 高扬140197/user/zte_ltd 时间 2010-10-12 16:41 -----

高扬140197/user/zte_ltd
2010-10-12 08:36

收件人
"Worley, Dale R (Dale)" <[email-masked]>
抄送
Paul Kyzivat <[email-masked]>, "[email-masked]" <[email-masked]>, 
[email-masked]
主题
Re: [sipcore] About RFC3911(Join header)'s potential error: //Join header 
in REFER?

> You do not use the Join header in the REFER request itself. 
> However, the Refer-To URI will have a 'header' specifying that the 
> INVITE to be generated will have a Join header:
> 
> REFER sip:aaa SIP/2.0
> Refer-To:  sip:bbb?Join=ccc
> 
> The recipient of this REFER will generate an INVITE:
> 
> INVITE sip:bbb SIP/2.0
> Join: ccc

This is similar to Replaces semantics in REFER(Refer-To) as defined in 
RFC3515 as:

Refer-To: <sip:[email-masked]?Replaces=12345%40192.168.118.3%3B
          to-tag%3D12345%3Bfrom-tag%3D5FFE-3994>

But I really did not see any normative defintion for Join semantics in 
REFER(Refer-To). If you saw it, please tell me the RFCs and relating 
sections.

Thanks,

Gao

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