The original called identifier is in the To header field of an initial request.
John > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On > Behalf Of Alejandro Orellana > Sent: 14 May 2009 16:29 > To: Lehto, Susan > Cc: [email protected] > Subject: Re: [Sip-implementors] Number delivery in diversion header > > The original dialed number is supposed to be carried in a diversion > header. > for example say : > A calls B > B forwards to C > C sends you an invite > > you should received an invite with a diversion like > Diversion: <[email protected]> reason=unconditional ,; some other parameters > Diverssion: <[email protected]>; > > also you can get one Diversion header with comma separated like > Diversion: <[email protected]> reason=busy; more parameters , <[email protected]> ; > reason=unconditional; more paramertes > > so the bottom most it is always the original called number > and topmost is > the dialed number (current one). > > take a look at the following draft for details. > draft-levy-sip-diversion-08.txt > > Please also notice the diversion header was never moved to an > RFC , rather > the History header it is the "official" . > however Diversion it is widely implemented. > > > -- > alejandro > > > On Thu, May 14, 2009 at 10:43 AM, Lehto, Susan <[email protected]> wrote: > > > To deliver the number originally dialed, is there an area in the SIP > > diversion header to carry the called "telephone number" for > delivery to > > a voice mail system? > > > > Our TDM telephone system is optioned to deliver to the > voice mail system > > the number dialed, so that if the called line forwards to > voice mail, > > > > > > > > 1. the voice mail system can respond with the called > person's greeting > > > > 2. if the called line forwards to another line, which in > turn forwards > > to voice mail, the voice mail system can respond with the > greeting of > > the person originally dialed. > > > > > > > > Can SIP achieve the same result? > > > > We are testing a SIP system, and the vendor does not know > of a solution. > > > > I see that a similar question had been posed on the > listserve in October > > 2000, but I have not yet found the answer > > > > Thanks for applying your expertise to this issue. > > > > > > > > Susan Lehto > > > > Sr. Analyst > > > > Boston University > > > > [email protected] > > > > _______________________________________________ > > Sip-implementors mailing list > > [email protected] > > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
