ADTRAN 1200130L2 Manuel d'utilisateur télécharger pdf (Page 41)

61200.130L1-1 FSU User Manual 27

Chapter 4. Applications

Bisync Application

The FSU can be used to connect IBM 3780/2780 (see IBM manual

number GA27-3004-2) bisync controllers and a host across a

frame relay network. Point-to-point and multi-point configura-

tions are supported at speeds up to 19200 bps. The LLC protocol

(mode 2) is used to provide a reliable transport layer across the

frame relay network. In a multi-point configuration the FSU

performs local spoofing, minimizing traffic across the frame

relay network. Sample network illustrations for both point-to-

point and multi-point are shown in Figures 4-3 and 4-4.

See Table 4-C for an example configuration for the point-to-point

application.

Bisync Bisync

3780 Controller

FEP Host

DTE1

DTE2

DTE1

DTE2

DLCI=17 DLCI=120

FSU FSU

RFC1490/LLC2

UNI

FRAME RELAY

Figure 4-3

Bisync Point-to-Point

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ADTRAN 1200130L2 Manuel d'utilisateur Page 41