> -----Original Message----- > From: asterisk-users-boun...@lists.digium.com > [mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of > Ernest Byaruhanga > Sent: Thursday, July 02, 2009 4:10 AM > To: asterisk-users@lists.digium.com > Subject: [asterisk-users] Nortel pbx & dtmf issues > > folk, > > I see from the archives that the issue of nortel handsets not > sending dtmf tones to asterisk has been discussed a couple of times, > but there is something I quite havent seen answered yet. > > Is this dtmf issue a problem with the nortel handsets or the PBX > itself? If the handset were changed to another one, would this issue > be solved? Or must the PBX be changed completely? >
The only issue that I've experienced with respect to DTMF and a Nortel PBX is when using SIP trunking. Nortel used/uses (newer versions of CS1000 software, 5.0 and newer IIRC, can use RFC2833-based DTMF) a proprietary SIP INFO-based DTMF. As it stands, Asterisk is capable of receiving and interpreting those messages properly. But sending DTMF to the Nortel is an issue without code modification. If you have a specific need for that, the changes themselves are fairly trivial, and I can detail those for you if you'd like. I might even have a patch laying around that would work or could be made to work, since we needed to integrate into an older version of the CS1000 software (since upgraded, so our current system passes DTMF via RFC2833). - Brad _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users