> Would this be a good job for the Viking Electronics DLE-300? > > It emulates a CO with a pair of POTS lines, so you can call from port > to port on it. It emulates all of the correct tones and CPC, both > modems think they are on POTS lines. Makes it very easy to connect a > pair of modems back-to-back, and fwiw it supports data to 112,500.
You can pick up a cheap Chinese analog 8 port PBX on ePay for about $60. It will create dial tone, ring, etc. and allow you to call from "extension" to "extension" so you can even dial in and get a handshake tone. The only issue is that I don't believe they can be daisy chained so eight ports is your max and there is no way to connect one site to another (short of running very long wires). -Ali