Batboard

Does anybody know which two leads (for receiver) of the rear mounted RJ-45 jack are the ones that go to the phone service line?

Also, where does a remote speaker connect to these things?? It has a 25 pin male AND female on the rear.

Don't know exacxtly what your asking, but I have a diagram with the pinout of the back panel connectors I'd happy to send you if you could give me an addresss