DNIS to DTMF with Asterik, is it possible?

I am in the search of an affordable solution for our issue. The only solution that I have found it about 5K and my budget this year is no way near that. Does asterik have the capabilities to convert DNIS information to DTMF tones? Here is the scenario, I have a Meridian Option 11c PBX. I was told by our vendor that it could generate DTMF tones to a fax server, it can’t. We purchased a fax server solution based on that information. We need and appliance/software solution that will generate DTMF tones for our fax server. I wanted to see if asterik had the ability to read the dnis information and then foward the call based on that info. When the call is fowarded, once the fax server picks up, dial a set of DTMF tones, preferably the last numbers in the dnis information, that will allow our fax server route the fax information.

Thank you in advance for any guidance,

Hi lcuellar,

Asterisk can send the dtmf digits to your fax server on the beginning of the call.

Here’s a quick example :

exten => _X.,1,Set(DIGITS=${EXTEN})
exten => _X.,2,Dial(SIP/fax_nbr@interface,180,D(${DIGITS}))
exten => _X.,3,Hangup

If you need any more advice or consulting service don’t hesitate to PM me.


Joao Cohen
Telecom Systems and Audiotext Specialist

I don’t know if this will be useful to you.