IMC Networks iMcV-T1/E1/J1-LineTerm TP Manuel d'instructions télécharger pdf (Page 17)

Loopback Testing

The IE-iMcV-T1/E1/J1-LineTerm, TP/SFP includes three Loopback test modes: Copper

Loopback, Fiber Loopback and Internal Fiber Loopback.

The following illustrations show a typical progression of Loopback tests (i.e., starting

by checking the copper segment at the local side, then the fiber segment at the

REMOTE side, etc).

Each Loopback performs the following:

•

Copies the incoming signal back out to the origin while continuing to transmit this

signal downstream.

•

Blocks upstream data from transmitting on the looped data line.

Loopback testing is useful for troubleshooting problems with network connections

should they occur. Looping received data back onto the transmit path helps

determine whether a connection is still valid. Copper Loopback tests isolate

problems on the copper run between an IE-iMcV-T1/E1/J1-LineTerm, TP/SFP module

and the connected device, while Fiber Loopback tests can isolate problems on the

fiber connected to the module.

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IMC Networks iMcV-T1/E1/J1-LineTerm TP Manuel d'instructions Page 17