RE: [Sipforum-discussion] SIP INFO and RFC 2833 support?

Hi,
 
SIP INFO method should not be used for DTMF Signaling.
Please look at the App-Interaction Frameworks and KPML drafts.
 
Regards,
Sreeram
 
-----Original Message-----
From: sipforum-discussion-admin(_at_)lists(_dot_)su(_dot_)se
[mailto:sipforum-discussion-admin(_at_)lists(_dot_)su(_dot_)se] On Behalf Of 
Vijay
Shanmugam
Sent: Tuesday, December 21, 2004 8:34 AM
To: Madabhushi Pramod
Cc: implementors-requesto(_at_)cs(_dot_)columbia(_dot_)edu;
sipforum-discussion(_at_)lists(_dot_)su(_dot_)se; ietf(_at_)ietf(_dot_)org
Subject: Re: [Sipforum-discussion] SIP INFO and RFC 2833 support?



        
        Hi,
         
        1) What is the latest draft on SIP INFO?
        The RFC we are following is 2976.
         
        But recently I had noticed a draft saying SIP INFO harmful.
        
http://www.softarmor.com/wgdb/docs/draft-rosenberg-sip-info-harmful-00.t
xt
         

        2) Is it mandatory to signal DTMF via SIP INFO?
        It is not mandatory to use SIP INFO for DTMF. For normal calls,
just an inband RFC 2833 DTMF implementation is enough.
         
        But if you are willing to provide 3rd party call control
service, where you do not have direct control over media and you just
have control over signaling, implementation of out-of-band DTMF
signaling using SIP INFO becomes mandatory. 
         
        Thanks & regards,
        Vijay Shanmugam
        2476, Swedesford Road,
        Malvern, PA 19355.
        Ph: 610 648 4547
        

        -----sipforum-discussion-admin(_at_)lists(_dot_)su(_dot_)se wrote: -----
        
        To: implementors-requesto(_at_)cs(_dot_)columbia(_dot_)edu,
sipforum-discussion(_at_)lists(_dot_)su(_dot_)se, ietf(_at_)ietf(_dot_)org
        From: Madabhushi Pramod <madabhushi_p(_at_)yahoo(_dot_)com>
        Sent by: sipforum-discussion-admin(_at_)lists(_dot_)su(_dot_)se
        Date: 12/20/2004 08:45PM
        Subject: [Sipforum-discussion] SIP INFO and RFC 2833 support?
        
        Hi all,
        
        I have couple of questions:
        
        1) What is the latest draft on SIP INFO?
        2) Is it mandatory to signal DTMF via SIP INFO?
        3) Do SIP vendors support RFC 2833 for G711 along with
        G729 also? I mean is it common for vendors to support
        RFC 2833 for G711?
        
        Any help is appreciated.
        
        Thanks,
        Pramod Madabhushi 
        
        =====
        Pramod Madabhushi
        email: mpramod(_at_)hotmail(_dot_)com,
              madabhushi_p(_at_)yahoo(_dot_)com
        Phone:001-408-204-8077
        
        
        
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