Cannot use the (*) key in calls

I am dialing into a conference bridge which requires you to use the star key at the begining of a command to dial in. Here is my setup.

SIP dect phone (KX-TGP500) —> Asterisk 1.6.2 system —> oubound sip trunk (ulaw) codec

I’m 99.9% sure DTMF is working when not using the (*) key. I have went into my features and disabled all features that start with the * key, or changed to pound on the ones I needed. I have also made sure I am not using any dial command options that use the * key. I’m not sure what else to check. any help would be much appreciated. thanks.


Activate the dtmf log and review if asterisk receive the * key.

To activate the dtmf log edit the logger.conf file in /etc/asterisk then make a logger reload in the CLI.