# Disable DTMF on certain Extensions & Voicemail

**URL:** <https://community.asterisk.org/t/disable-dtmf-on-certain-extensions-voicemail/32718>\
**Category:** Asterisk General\
**Created:** [October 1, 2010, 9:59am UTC](https://community.asterisk.org/t/disable-dtmf-on-certain-extensions-voicemail/32718 "2010-10-01T09:59:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![system](https://global.discourse-cdn.com/asterisk/original/2X/4/475d0c889911cfb84ac4881ad6df8b523e3f9105.png) [@system](https://community.asterisk.org/u/system)\
**Post date:** [October 1, 2010, 9:59am UTC](https://community.asterisk.org/t/disable-dtmf-on-certain-extensions-voicemail/32718/1 "2010-10-01T09:59:01Z")

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Hi,

This may sound like an odd one, but we are using Asterisk with FreePBX 2.8 on Centos 5.5 using SIP trunks only and have a requirement where we need to disable DTMF on certain users extensions and voicemail.

We have gone through most of the config files but cannot find a way to do this, I thought it might have been simple but it appears not.

Is there a simple way of doing this or will I need to recode something? At least we would like to disable the ability to use the pound key ‘#’ in voicemail as it affects another bit of software on our phones.

Hope you can help, if there is anything else you need let me know.

Thanks in advance.

Paul

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**Author:** ![system](https://global.discourse-cdn.com/asterisk/original/2X/4/475d0c889911cfb84ac4881ad6df8b523e3f9105.png) [@system](https://community.asterisk.org/u/system)\
**Post date:** [October 5, 2010, 10:25am UTC](https://community.asterisk.org/t/disable-dtmf-on-certain-extensions-voicemail/32718/2 "2010-10-05T10:25:34Z")

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Nobody got any ideas on this one? It’s really bugging me and I have gone google eye’d searching through all the code.

Regards,

Paul