[SIPForum-discussion] SIP registration

XIAO Xiaohong Xiaohong.Xiao at alcatel-sbell.com.cn
Tue Jan 12 07:04:54 UTC 2010

Let me clarify my question with examples.
Resiger MSG-1:
Register: sip:abc.com
Call-ID: 11111
From: sip:1380 at abc.com
To: sip:1380 at abc.com <mailto:1380 at abc.com> 
Contact: 1380 at
Resiger MSG-2:
Register: sip:abc.com
Call-ID: 22222
From: sip:1390 at abc.com
To: sip:1390 at abc.com <mailto:1380 at abc.com> 
Contact: 1390 at <mailto:1390 at> 
They are sent to a same Registra one by one, then how many bindings should be kept in the registra?
Or, only the second binding be kept?


From: discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org] On Behalf Of Sriram Subramanian
Sent: 2010年1月12日 13:40
To: XIAO Xiaohong
Cc: SIP Forum
Subject: Re: [SIPForum-discussion] SIP registration

        It is possible but the latest registration will be active and that contact will be used by the registrar overwriting the previous contact.

On Mon, Jan 11, 2010 at 7:40 AM, XIAO Xiaohong <Xiaohong.Xiao at alcatel-sbell.com.cn> wrote:

	Is  it possible one UA register two contacts to a registra by two Register messages?
	The Call-ID of the two messages are different. 

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