[SIPForum-discussion] UNSUBSCRIBE method

[Jeff Wright]

SUBSCRIBE with Expires:0 or expires=0) does unsubscribe from a
registrar, yes (as per 3261).  But I don't believe it is the same as the
dedicated UNSUBSCRIBE method specified in 2848.  I've never seen it
mentioned anywhere else though and wondered if I should bother testing
its use in our test environment.

 

Thanks for your response.

 

Jeffrey D. Wright

System Test Engineering Manager

Aztek Networks, Inc.

 

________________________________

From: Donald Lee [mailto:baolovebao at gmail.com] 
Sent: Wednesday, January 16, 2008 6:46 AM
To: Jeff Wright
Cc: discussion at sipforum.org
Subject: Re: [SIPForum-discussion] UNSUBSCRIBE method

 

SUBSCRIBE with Expires:0 header value means UNSUBSCRIBE.

On Jan 15, 2008 3:48 AM, Jeff Wright <JWright at azteknetworks.net> wrote:

PINT (RFC2848) defines three new additions to core SIP: SUBSCRIBE,
NOTIFY, and UNSUBSCRIBE.  However, IANA's "Session Initiation Protocol
(SIP) Parameters" ( http://www.iana.org/assignments/sip-parameters, last
updated 2007-12-17) does not list UNSUBSCRIBE as a registered method for
SIP.  Can anyone explain this apparent disparity for me?  Is UNSUBSCRIBE
deprecated, and hence unsupported as of 2008? 

 

Thanks,

 

Jeffrey D. Wright

System Test Engineering Manager

Aztek Networks, Inc.

 


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-- 
BR
Donald 

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