AW: [Serusers] PRACK

Hi, the situation is more complicated. The environemet: A ... a "traditional" phone in the PSTN world B ... an other "traditional" phone in PSTN C ... a cisco gw connecting PSTN to IP (SIP) D ... a SIP-Server (ser) E ... a phone number configured in ser, that is forwared to the number of B (using URI rewriting from ser) The request flow is as follows: 1. A is connected (over PSTN) to C 2. C sends an INVITE to D (URI: E - this is the To-Header, too) 3. D rewrites the INVITE for E to an INVITE to B 4. D sends an INVITE to C for B (E is the record-route) 5. C sends both E a PRACK 6. D sends itself a PRACK for B (but i am not forwarding it) The question is - why does cisco send this PRACK at all. Wenn I use the same configuration which IP-Phones only, then no PRACK are send. At 5. the phone B rings (but no ring tone at A), and after accepting the call at B the call is established and works. Regards, Reinhard -----Ursprüngliche Nachricht----- Von: serusers-bounces(a)iptel.org [mailto:serusers-bounces@lists.iptel.org] Im Auftrag von Andy Blen Gesendet: Donnerstag, 26. Juni 2003 15:18 An: Reinhard Hainz; serusers(a)lists.iptel.org Betreff: Re: [Serusers] PRACK I don't think the problem is on SER side, SER supports PRACKs transparently. Feel free to send us network dumps so that we look at the problems you have. -Andy At 02:59 PM 6/26/2003, Reinhard Hainz wrote: forwarding an incoming call from a cisco router back to it (with an other number) à the destination telephone rings but i do not hear the signals (ringing) on my calling phone. When the called phone accepts the call then everything works fine. forwarding) -- Andy Blen iptel.org Services _______________________________________________ Serusers mailing list serusers(a)lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers