I have installed a 2911 ISR with CME and UE to run VOIP. There are 20 phones however only 3 need to be able to make and receive calls.
There are 3 analog phone lines going into the system. Creating a plar so that if someone dials phone number a, it goes directly to that specific extension was no problem so.
555-1111 goes to extension 2000
555-2222 goes to extension 2001
555-3333 goes to extension 2002
My problem however is I cannot figure out how to make it so that if extension 2000 dials out, it only uses 555-1111. Same for all 3 extensions. All I could do was create a trunk group which I have named POTS. I have assigned all three FXO ports to that trunk group so that when someone dials out, it picks a free line.
The users however want to ensure that the line associated to 2000 only gets used by 2000. Same for 2001 and 2002 so how can I restrict it so that if 2000 dials out, it only dials out on 555-1111. etc.
Thanks for your help.