Testing4-2 7511-A2-GB20-00June 1997CSU or External Network LoopbackCSU loopback is an external loopback that is located as closely as possible to thenetwork interface. A CSU loopback is initiated by the network.DSU CSUDTEInterface AggregateDTEPortDDSNetworkPort496-15144CSU Loopback

Troubleshooting

Model 7511 Dual DSU Features

DSU Configurations

Configuring the Dual DSU

Installing the Rear Connector Plate

Installing the DSU Card

Installing the Network and DTE Cables

Selecting a DSU

Status LEDs

Network LEDs

DSU Selection LEDs

Test

Port

Local Loopback

CSU or External Network Loopback

Digital Loopback (DL) and Remote Loopback (RL)

Ending an Active Test

Overview

Digital Network (DDS) Connector

V.35 DTE Connector

technical specifications

Paradyne 7511 User Manual

7511