Mobile Backhaul Application Overview

This section provides an application example (see Figure 1) based on the mobile backhaul reference model where customer edge 1 (CE1) is a base station controller (BSC), Provider Edge 1 (PE1) is a cell site router, PE2 is an M Series (aggregation) router, and CE2 is a BSC and Radio Network Controller (RNC). The Internet Engineering Task Force (RFC 3895) describes pseudowire as “a mechanism that emulates the essential attributes of a telecommunications service (such as a T1 leased line or Frame Relay) over a PSN” (Packet Switching Network).