The easiest way to do it is to program each t line as E&M. Then put them is a pool and assign target lines at each end. If you want sys A to be able to call out on sys B, assign an auto dn on each system. I have a couple of systems doing this and it works great. If you dial the auto dn from site A, and get dial tone, dial 9 and away you go. Works a lot better with t lines than standard E&M due to the inherent loss bulit in an analog circuit. If you have any specific questions, just post back and I'll be glad to help. Oh ya, are these new installs? The reason I ask is you will need a coordianated dial plan. Take for instance, on one of my setups, site A has a numbering plan starting with 2221 and an auto dn of 2220. The site B they are connected to has a numbering plan starting with 4221 and an auto dn of 4220. The dest code of 4 at site a uses pool e (ie the t line), absorb none. When you dial 4221 at site A, it selects a channel on the t line and sends 4221 which is also a target line rec'd digits at site b. The target lines on this site ring only, so the call comes in on an icm key. Site B, just the opposite, using dest code of 2. S When site b leaves in the eve, they redirect their main set via the t line (medical clinic) to the main set rec'd digits at site A. Meanwhile site A has fowarded their set to the ans service via the other t line that gives them dial juice. It works fine and last a long time!!!!!
