I’m in the process of testing 1.4.0 on a system that has been successfully running 1.2.x for some time now. I have a mix of PAP2-NA’s and softphones connected. When using 1.4.0, DTMF tones are not being recognized except within Asterisk’s voicemail and custom prompts we’ve made.
Returning to 1.2.15 fixes the problem. It looks like something is up with 1.4.0. I’m using dtmfmode=info on my PAP2-NA’s (which are also configured for “info”). My gateway to the PSTN is a Lucent TNT using dtmfmode=rfc2833.
The firmware revision of the PAP2 doesn’t seem to matter. I have some running 3.1.10, 3.1.12, 3.1.20, and others still on the old 2.x series.
Any suggestions? For now, the fix (for me anyway) seems to be to go back to 1.2.15.