User manual

Total Access 600 Series User Manual © 2002, ADTRAN, Inc.
Total Access 600 Series T1 ATM IAD UIG/64200681L2-31B
Page 50
CSU Lpbk
Enables or disables far-end commanded loopbacks via the FDL channel.
Test
These options are used to initiate local and remote loopback tests and display the test status.
Loc LB
(Local Loopback) Causes loopback on near-end port.
None
No test/stop test.
Line
Metallic loopback
Payload
Payload loopback framing and clocking are regenerated.
Remote LB
(Remote Loopback) Sends a loopback code to a remote CSU.
None
No test/stop test.
Line
Metallic loopback
Payload
Payload loopback framing and clocking are regenerated.
Test Status
Indicates whether a test is underway.
Alarm
Loss of Signal (LOS)
No signal detected on port interface.
Red Alarm (RED)
Not able to frame data received on the port. Alternately referred to as Out of Frame (OOF).
Yellow Alarm (YELLOW)
Remote alarm indicator (RAI) being received on port.
Blue Alarm (BLUE)
Receiving unframed all ones from the port alarm indicator signal (AIS).
Status
Displays T1 performance data.