Appendix D. TSU 120 System Messages
61200.129L1-1
TSU 120 User Manual
123
DSX-1 (PBX) Interface
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
Summary of Contents for TSU 120
Page 1: ...TSU 120 PART NUMBER 1200129L1 USER MANUAL 61200 129L1 1A July 1997...
Page 52: ...Chapter 2 Installation 38 TSU 120 User Manual 61200 129L1 1...
Page 132: ...Appendix C System Configuration Charts 118 TSU 120 User Manual 61200 129L1 1...
Page 138: ...Appendix D TSU 120 System Messages 124 TSU 120 User Manual 61200 129L1 1...