Re: [sipcore] RFC5626 and REGISTER with multiple contacts

Ivo Sedlacek <ivo.sedlacek@ericsson.com> Fri, 04 May 2012 07:04 UTC

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From: Ivo Sedlacek <ivo.sedlacek@ericsson.com>
To: "Worley, Dale R (Dale)" <dworley@avaya.com>, "sipcore@ietf.org" <sipcore@ietf.org>
Date: Fri, 04 May 2012 09:04:13 +0200
Thread-Topic: RFC5626 and REGISTER with multiple contacts
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Subject: Re: [sipcore] RFC5626 and REGISTER with multiple contacts
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Hello,

I agree that if several contacts are registered, the redirection process can become more complicated. However, that is independent of whether a UA registers several times with a single contact, or registers once with multiple contacts.


Based on the feedback received so far, there doesn't seem to be a technical reason why multiple contacts (sharing the same IP address and port, the same sip.instance and the same reg-id) in a single REGISTER would not work with outbound.

Kind regards

Ivo Sedlacek 

Ericsson
GF Technology, Terminal Standardization
Sweden
Office: +46 10 711 9382
ivo.sedlacek@ericsson.com
www.ericsson.com

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-----Original Message-----
From: Worley, Dale R (Dale) [mailto:dworley@avaya.com] 
Sent: 3. května 2012 20:03
To: Ivo Sedlacek; sipcore@ietf.org
Subject: RE: RFC5626 and REGISTER with multiple contacts

> the UA registers all contacts of all the applications using a single 
> REGISTER request, as due to the potentially large number of 
> applications it is not feasible to register each contact individually

If there really is enough applications that registering each one individually is not feasible, beware that there may be so many that the redirection process can't handle them properly.

Dale