Extensions on out bound calls

I have freepbx 2.3.1. Outgoing calls on my SIP trunk work but if I connect to a number that presents menu or extension options, hitting the number corresonding to the menu selection doesn’t transmit anything, nothing happens. Is this a SIP problem or a freepbx setup problem? Also, while I’m at it, is there a quick fix for timestamps on voice mail being recorded incorrectly?