The cost of PRI service comprises four components: the T-1 line; the B and D channel arrangements; the trunking arrangements; and special features. The T-1 charge covers the cost to connect your ...

It seems to vary based on whether or not the provider is/was in the business of selling PRI lines. AT&T will say they're giving you a single trunk with X sessions, but Vonage will say they're ...

A “trunk” is a line ― or link ― that carries signals and connects nodes in a communications system. To explain SIP trunk channels, think of it as a pipe that carries the data channels ...