Ring no answer/No activity

Limited knowledge of Asterisk/FreePBX. I have a Siemens Hicom 300 connected via T1 to FreePBX server installed from latest distro and upgraded to The cards on both ends are green lit, configured the same and ready state. Trying to use the FreePBX as a standalone voicemail server for the Hicom extensions. When calling a Hicom extension (forwarded to channels pointed at FreePBX) I get a ring no answer and no signs of a call in the Operator Panel on FreePBX. In addition when running dahdi monitor, no send or receive data. In FreePBX, I set up default trunk, inbound route to an extension, and of course the extension (same as ext on Hicom). Any advice as to why I am not hitting a voicemail box? Thanks!