ADTRAN ATLAS 800PLUS user manual Frame Relay, Point-to-Point Circuit

Chapter 1. Introduction

The modules include the following:

•Quad Nx 56/64 Module

•Quad T1/PRI Module

•Octal Basic Rate ISDN Module

•T3 Module

•Async-232 Module

•Modem-16 Module

Frame Relay

Frame relay is a packet-switched service that allows efficient transfer of bursty traffic in a WAN environment. It offers lower-cost data transfer when compared to typical point-to-point applications. Using virtual connections within the frame relay network and combining those into a single physical connection at each loca- tion results in lower cost. Frame relay providers use a frame relay switch to route the data on each virtual circuit to the appropriate destination. Figures 1-1 and 1-2 illustrate a conversion from a typical point-to-point application to a frame relay application.

Router

Frac T1

PBX

	ATLAS 800PLUS
PBX	Frac T1	Router

Router

PBX

Frac T1

Router

PBX

Figure 1-1. Point-to-Point Circuit

1-2 ATLAS 800PLUS User Manual 61200226L1-1