>>>> Comments in-line

        -----Original Message----- 
        From: Kirill Bolshakov [mailto:[EMAIL PROTECTED] 
        Sent: Tue 15/07/2003 13:04 
        To: [EMAIL PROTECTED] 
        Cc: 
        Subject: [Sip-implementors] Setting on Hold simultaneously
        
        

        Hi,
        
        Are there any normative documents regarding the following situation:
        1. The session is succesfully established between UA A and UA B.
        2. Both UAs are UI-constrained hardware devices, and very similar to
        traditional hardware phones.
        3. Users of A and B "simultaneously" (within those 100ms that are
        introduced by network delay) set their party on hold.
        
        Thus, from the point of view of processing SDP Offer/Answer, they both
        can use their copies of offers as corresponding answers (except, may be,
        fixing version numbers in "o"). But what from the point of view of the
        UI? Which one is then given the ability to take the party off hold?

        >>>> This seems to be an issue for local policy at the UI.  The phone might 
have a policy that does not 

        allow the other side to carry out such actions once the call is placed on 
hold, as it has requested a 'sendonly' SDP attribute - so might reject the request for 
hold (so the first one to complete - wins).

        Chris.

        
        
        Thanks in advance,
        Kirill
        
        
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