1. The document describes how a point-to-point leased line is built over a public switched telephone network between two cities. 2. It shows how the bandwidth of the leased line is split at each end by a channel splitter to run a circuit switched network through a VDPS router and to terminate on a data router for a private IP network. 3. The leased line paths avoid the local exchange and are directly connected to muxes for transmission between cities without mixing with public telephone trunks.