How to make a basic call from Vocal to Asterisk

Hi , Can any body help me in making a basic call from vocal user to Asterisk PBX.

I have installed Vocal and Asterisk on same system and using 5060 port for Vocal , 5061 port for Asterisk.
Call scenario is Vocal user 1001 is calling Asterisk extn no 8500 and the call should land on 12345 user which is registered with Asterisk.
Pls. help me the configuration details required at Vocal and Asterisk.