the 1st thing would be searching CCO for dial plan to get information
Cisco Unified Communications Manager (CallManager) Dial Plan Deployment Guide
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/idp/504_423/deploy/dpdg.html
Dial Plan
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/7x/dialplan.html
there really is nothing much to this, search downloads for available dial plans per version, if the one you're looking for isn't there, google is your best friend to get examples and create your own route patterns
BTW, since you don't mention what you're using or versions i'm just going to assume this is CUCM 7.X
HTH
java
if this helps, please rate
HTH
java
if this helps, please rate