Hi, I'm looking for some advice on how to solve DTMF issues. I have 2 boxes, one which is the connection to the PSTN (PSTN) through PRIs and SIP trunks, and a second (PBX) which has UAs registered to it. We have a customer that has an existing pbx that we trunk analog lines to using a GXW-4008. The GXW is set to dtmfmode inband. This seems to provide the best outbound DTMF.
The issue I'm currently having is with inbound DTMF. PBX and PSTN are connected through a standard sip trunk. Both machines are on the same physical switch. Here are the results I've seen: PBX <-> PSTN using rfc2833 | Incoming call on PRI | DTMF on pbx voicemail system fails (dup/missing digits) PBX <-> PSTN using inband | Incoming call on PRI | DTMF on pbx voicemail system is correct PBX <-> PSTN using rfc2833 | Incoming call on SIP | DTMF on pbx voicemail system is correct PBX <-> PSTN using inband | Incoming call on SIP | DTMF on pbx voicemail system is correct All asterisk versions are 1.4.35. PRI card is a Sangoma A104 with HW DTMF detection. Does asterisk just have a problem converting the DTMF from the D-channel to rfc2833? The DTMF log looks ok (I dialed '642'), so I'm not sure where the issue is coming in. [Jul 4 21:05:44] DTMF[9769] channel.c: DTMF begin '6' received on Zap/15-1 [Jul 4 21:05:44] DTMF[9769] channel.c: DTMF begin passthrough '6' on Zap/15-1 [Jul 4 21:05:44] DTMF[9769] channel.c: DTMF end '6' received on Zap/15-1, duration 100 ms [Jul 4 21:05:44] DTMF[9769] channel.c: DTMF end accepted with begin '6' on Zap/15-1 [Jul 4 21:05:44] DTMF[9769] channel.c: DTMF end passthrough '6' on Zap/15-1 [Jul 4 21:05:45] DTMF[9769] channel.c: DTMF begin '4' received on Zap/15-1 [Jul 4 21:05:45] DTMF[9769] channel.c: DTMF begin passthrough '4' on Zap/15-1 [Jul 4 21:05:45] DTMF[9769] channel.c: DTMF end '4' received on Zap/15-1, duration 100 ms [Jul 4 21:05:45] DTMF[9769] channel.c: DTMF end accepted with begin '4' on Zap/15-1 [Jul 4 21:05:45] DTMF[9769] channel.c: DTMF end passthrough '4' on Zap/15-1 [Jul 4 21:05:45] DTMF[9769] channel.c: DTMF begin '2' received on Zap/15-1 [Jul 4 21:05:45] DTMF[9769] channel.c: DTMF begin passthrough '2' on Zap/15-1 [Jul 4 21:05:46] DTMF[9769] channel.c: DTMF end '2' received on Zap/15-1, duration 100 ms [Jul 4 21:05:46] DTMF[9769] channel.c: DTMF end accepted with begin '2' on Zap/15-1 [Jul 4 21:05:46] DTMF[9769] channel.c: DTMF end passthrough '2' on Zap/15-1 Thanks. -- James -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
