Asterisk Voicemail Tone Detection -- 2

We're looking for someone who has previously written modules for Asterisk. Modules that preferably were constructed to work in version 11 and 13. The ideal candidate will be able to stand up their own Asterisk development environment to build and test in. An asterisk module which will allow us to, while placing an outbound call and playing a set of sound files, simultaneously listen for a single frequency tone (answer machine tone) and or DTMF tones. If a either single frequency tone or a DTMF is detected we need to exit and go to the matching extension in the dial plan. EG. DTMF #1 is detected, exit to extension 1 in dial plan context. If Single Frequency Tone (Answer Machine Beep) detected, exit and go to extension beep in dial plan context The module must be compatible with both Asterisk 11 and 13. The module should be executed from a dial plan. It looks like this has been accomplished on Freeswitch with mod_avmd. Perhaps it can be ported to Asterisk. [login to view URL] We need to have some dial plan variables for this module that allow us to adjust the tone duration and tolerances for amplitude and frequency. If one references the Freeswitch module link, we basically need all of that logic ported into an asterisk module.