Certainly. We just did this.
Here is our config:
************
voice-port 3/0
input gain 12
dial-peer voice 404 pots
description paging system
destination-pattern 420.
port 3/0
**********
input gain might be too high for you. It is just right for us. Your destination pattern will probably be something like "14.".
As you might know, Valcom 2006A has six zones. You send one digit to the unit to tell it which zone to page. You might want to configure a route pattern on call manager to append a digit to the dialed pattern "14". When the call reaches the gateway it will strip the 14 off and send the remaining digit.
Ask more if you need more explaination.