Have a voice T1 leased line, that goes from our Paging terminal to a Central telephone office. It has Wescom D4 (24 voice slots) multiplexer units on both ends of the leased line. The signaling is
Voice T1 1.54 ESF/b8zs CAS-Feature group D.
Which Cisco unit, modules, and software do we need to allow us to put a cisco unit at each end location and have the Cisco unit take the T1 convert it to "Ethernet" IP signaling and send it over
the Internet between both locations ??