I have 3 PRIs with blocks of 200 DIDs divided equally. The Telco will only take specific groups of DIDs for each trunk and I need to know how to select which ISDN trunk for outgoing to show the correct caller ID on external lines and mobiles else it will be over written with the main line number for each trunk.
E1 0/0/0 1000-1199
E1 0/0/1 1200-1399
E1 0/0/2 1400-1599
From CUCM it is a SIP Trunk to this Gateway.
I have configured originally as below, but for some reason when I make outgoing calls, the translation rules/dial-peers for 19/29/39T are never hit and I cannot make any outgoing calls. I have to explicitly create a POTS dial-peer for 9T for the calls to go out. Can anyone advise what errors I made? Thanks a lot!