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List:       sip-implementors
Subject:    Re: [Sip-implementors] Caller Preferences
From:       "Avasarala Ranjit-A20990" <ranjit () motorola ! com>
Date:       2005-12-20 5:50:41
Message-ID: 750BBC72E178114F9DC4872EBFF29A5B512744 () ZMY16EXM66 ! ds ! mot ! com
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Hi Subramanya

  Yes the contact from the callee can be used if there is no explicit
match. 

Regards
Ranjit


-----Original Message-----
From: sip-implementors-bounces@cs.columbia.edu
[mailto:sip-implementors-bounces@cs.columbia.edu] On Behalf Of
Shankarachar Subramanya-a22587
Sent: Saturday, December 17, 2005 4:51 PM
To: sip-implementors@cs.columbia.edu
Subject: [Sip-implementors] Caller Preferences


Hi,
       In Caller preferences RFC3841, 5.2. Feature Set Preferences, 

  "  When only "explicit" is present, it means that all contacts 
provided by the callee will be used. However, if the contact isn't an 
explicit match, it is tried last amongst all other contacts with the 
same q-value. The principle difference, therefore, between this 
configuration and the usage of both "require" and "explicit" is the 
fallback behavior for contacts that don't match explicitly. Here, they 
are tried as a last resort. If "require" is also present, they are never

tried"

my question is if "explicit" is present in accept-contact header of the 
request , can a contact from a callee be used  if doesn't match at all. 
and also i couldn't make out any behavioral difference b/w 
accept-contact header with explict and absence of both explict and 
require in a request.

Regards
Subramanya


   
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