Repeater Loopback (9123, 9126, 9128) - Paradyne iMarc SLV Operation Manual

5. Troubleshooting

Repeater Loopback (9123, 9126, 9128)

The Repeater Loopback (RLB) loops data received from the data ports and the
DSX-1 interface after the signal has passed through the framing circuitry. Use RLB
to ensure that all of the data is correct up to the point where it is sent over the
interface. This helps to indicate that the iMarc unit is operational.
An attached device or test equipment should generate and monitor data to be
looped back.
The iMarc unit will not respond to any messages from the network during this test.
An RLB cannot be started when one of the following tests is active:
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5-32
Main Menu→Test→Network Physical Tests
Other
T1
Interface
CAUTION:
This test may affect operation of frame relay PVCs assigned to the
selected interface. While in loopback, the frame relay link will be down
so any IP data being sent while this test is active will be disrupted.
Payload Loopback, Send Remote Line Loopback, or an active Monitor Pattern
on this network interface.
All loopbacks on any other T1 interface with DS0s assigned to this network
interface.
Send Pattern Test on this network interface or any synchronous data port (Port
Use set to Synchronous) assigned to this interface.
Send V.54 or FT1 Loopback, or Data Channel Loopback on any synchronous
data port (Port Use set to Synchronous) assigned to this network interface.
May 2003
Framer
The T1
RLB
AIS
Interface
97-15338
9000-A2-GB33-20