Dsx-1 (Pbx) Interface - ADTRAN TSU 120 User Manual

DSX-1 (PBX) Interface

61200.129L1-1
Appendix D. TSU 120 System Messages
The following messages indicate the status of the DSX-
1 (PBX) interface:
Frame Slip Indicates a Frame Slip has occurred on
the DSX-1 interface; this is present in
Alarm History only
Line Loop Up Line loopback activated
Port Loop Up Port loopback activated
Loopdown Loopback has been deactivated
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