Starting a repeater loopback, Starting a data channel loopback, Repeater loopback – Paradyne 3163 User Manual

Page 65: Rlb), Data channel loopback, Dclb)

Monitoring and Testing

4-13

3163-A2-GB20-10

March 1999

Starting a Repeater Loopback

The Repeater Loopback command (RLB) loops the

signal being sent to the network back to the data port. The
signal is looped back as close to the network interface as
possible (after it has passed through the framing circuitry
of the DSU/CSU). Framing CRCs and BPVs are
corrected.

98-15948

CSU

DSU

NETWORK

INTERFACE

RLB

PORT 1

ALL 1s

Procedure

To perform a Repeater loopback:

1. From the top-level menu screen, select Test.

2. From the Test screen, select Lpbk.

Test:
Rlpbk Lpbk

Ptrns

3. From the Loopback screen, press the

key until

the RLB selection appears on the screen.

4. Select RLB.

Loopback:
LLB

PLB

RLB

Test Started appears on Line 2. If a Repeater
loopback is already in progress, the Already
Active message appears. If an invalid combination
of loopbacks is in progress, the error message
Invld Test Combo appears (see

Table 4-5

for

valid loopback test combinations).

Starting a Data Channel Loopback

The Data Channel Loopback command (DCLB) loops

the data received from the network interface, for all DS0
channels allocated to the data port, back to the network.
The loopback occurs after the data passes through the port
circuitry but before it is sent out the data port.

98-16103

CSU

DSU

NETWORK

INTERFACE

DCLB

Procedure

To perform a Data Channel loopback: