On-Net Calling
NWV
College PBX,
Centrex or Call Manager
College PBX, Centrex, or Call Manager
3640 Router
3640 Router
1.Caller on campus enters access code and 10 digit phone number, if a PBX or Centrex site and just the 10 digits if a Call Manager site.
2.
3.  Remote 3640 Router/Call Manager accepts 10 digit phone number and forwards accordingly.
2.  3640 Router/Call Manager matches 10 digit phone number with the Gatekeeper and routes the call using the IP address across network.
Gatekeeper