mapping did's to extensions

[cslt35si]

We have a BCM400, all of the current extension are route or map to DID's. The DID'S are routed thourgh IP's via a direct line of site connection. I cannot see how this was accomplish and would like some assistance. an example of the numbers are ext. 2273 and the DID is 6773245. Thank you.

 

[56BelAir]

Check under Telephony, Lines, Target lines, Pub recieved or private recieved and you should see the last few digits of the DID, then you wil see a tab "assigned DN's" and you should see the extension.