ADTRAN ATLAS 550 Manual de usuario descargar pdf (Pagina 32)

Chapter 1. Introduction

1-2 ATLAS 550 User Manual 61200305L1-1

Access Router

As an Access Router, the ATLAS 550 combines the functions of a T1 CSU/

DSU, an intelligent channel bank, a T1 Multiplexer, and DACS into a single

platform. The ATLAS 550 isideal for point-to-pointconfigurations oraccess

to public networks. For optimization of existing equipment and network re-

sources, the ATLAS 550 can support a variety of data andanalog voice ap-

plications (see Figure 1-1 ). The AccessRouter also supportsa widerange of

data applications including T1 “drop and insert,” channel grooming, and

wide area data transport.

Figure 1-1. Point-to-Point Circuit with External Routers

Frame Relay/Router

TheFrameRelay/Router features enable theAccessRouter to act asavoice/

dataFRAD,aframerelayswitch,andanIProuterinadditiontoactingasan

available bandwidth manager and a switch application.

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 con-

nections within the frame relay network and combining those into a single

physical connection at each location result in lower cost. Frame relay pro-

vidersuseaframerelayswitchtoroutethedataoneachvirtualcircuitto

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

PBX

Frac T1

ATLAS 550 using

an external router.

TSU 100e

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ADTRAN ATLAS 550 Manual de usuario Pagina 32