[Asterisk-Users] DTMF digit dropping

[Bryce Nesbitt (mailing list account)]

I run an automated information retrieval system, using Asterisk. Fairly
often the system misses a dialed digit.  Our codes are all 4 digits, see
lots of logs with:

       4199  - OK
       530   - Invalid code
       330   - Invalid code
       5330  - OK

As callers experience skipped codes.  We're using Broadvoice SIP with
inband DTMF (and we've tried every possible setting or option related to
DTMF).  Anyone else getting similar drops?  Any solutions.

Is http://connect.voicepulse.com/ , using IAX, any better?