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6-25
9124-A2-LB20-00
March 2000
Repeater Loopback
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 FrameSaver unit is operational.
Main Menu →Test →Network Physical Tests →Repeater Loopback
An attached device or test equipment should generate and monitor data to be
looped back.
97-15338
The T1
Interface
Other
T1
Interface
AIS
Framer
RLB
The T1 NAM will not respond to any messages from the network during this test.
CAUTION:
This test may affect the operation of the frame relay PVCs assigned to
the selected port. While in loopback, the frame relay link will be down
so any IP data being sent while this test is active will be disrupted.
An RLB cannot be started when one of the following tests is active:
H Payload Loopback, Send Remote Line Loopback, or an active Monitor
Pattern on this network interface.
H All loopbacks on the DSX-1 interface.
H Send FT1 Loopback or Data Channel Loopback on the synchronous
data port.