I’m a little new to asterisk, so forgive me if the answer to this seems obvious 
Here is the situation:
My Asterisk server has two trunks. One is from a POTS line coming in thru a cheap X100P i got off ebay for 15$. The other comes in from a VoIP provider thru SIP. I have no problems when it comes to incoming/outgoing calls, but my server seem to have a little problem when I dial in from the SIP line.
If I use the ZAP trunk and press * to get into my voicemail menu, i have no trouble, it asks for my password and the commands work fine. I can play and erase my messages all that jazz.
If I use my SIP trunk and try to input touchtone commands however, nothing seems to register, the digital receptionist just keeps talking as though I had not pressed any numbers on my phone. Is this a configuration problem on my side, or is it my SIP service provider who’s the problem?
Thanks for your time!