[Asterisk-Users] DTMF's indescipherable, but voice clean!

[Nabeel Jafferali]

> After many hours today thinking that I had placed a bug into my dialplan,
> I realized that for some reason DTMF tones are simply not making it into
> asterisk! Calling into my pbx transmits crystal-clear audio in both
> directions. But dialing DTMF's from pstn->pbx is unsuccessful, while pbx-
> >pstn works fine. The tones simply don't make it through. Tiny brief
> fragments are all.

It might help to describe what interfaces your Asterisk PBX with the PSTN.
Is this a VoIP provider DID you are using, or a POTS line with an interface
card, or a PRI with a digital interface card?

Nabeel