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NCL Loopback Test

Distribution panel port:

Unfasten

(a)

screws

Loopback

(b)

connector

3. Enter the following command at the NCL prompt:

NCL> STARTLOOP NODE server MODEM CONNECT LINE

_NCL> line–name MODE CONNECTOR

When the prompt returns, enter the following command:

NCL> LOOP NODE server MOP CIRCUIT circuit [COUNT –

_NCL> integer,] [LENGTH integer,] [DATA type]

NCL Command Information

server name

server

name of physical line

line–name

circuit name

circuit

COUNT, LENGTH, and DATA specify the number of blocks, length, and type of data to be sent

in the test. The default sends 1 block of 40 bytes with an alternating sequence of 1s and 0s (hexa-

decimal value=55). For more details, see DEC Network Integration Server Problem Solving.

4. If the test passes, no message is displayed.

If the test fails, an error message is displayed.

1. Start

NCL

on the load

host.

2. Attach the cable loop-

back connector to the

port or cable to be

tested.

NCL>

Synchronous cable:

(a)

Unfasten

screws

(b)

Loopback

connector

–

LKG–5724–91I