Chapter 3. Configuration
3-30
MX2800 STS-1 User Manual
61200659L1-1
VT/Port Traps
Trap
If enabled, the unit issues a trap when...
LOS
(T1/E1 Loss of Signal)
The unit has lost the receive signal on a T1/E1.
CAIS
(Carrier Side AIS)
The T1 is receiving all ones from the STS side
of the network.
LAIS
(Loop Side AIS)
The T1 is receiving all ones from the DSX-1
interface.
XCV
(T1/E1 Excessive Code Violations)
The controller card is receiving excessive code
violations, exceeding the threshold set by the
user (see
XCV Threshold
on page 3-12).
Failure
VT-LOP
(VT Path Loss of Pointer)
When the unit fails to find a valid VT pointer. A
VT LOP defect is declared when either a valid
pointer is not detected in eight consecutive VT
superframes, or when eight consecutive VT
superframes are detected with the NDF set to
"1001" without a valid concatenation indicator. A
VT LOP failure is declared when the VT LOP
defect persists for 2.5 +/- 0.5 seconds.
VT-AIS
(VT Path Alarm Indication Signal)
The unit is receiving a VT path alarm indication
signal. VT-Path AIS is specified as all ones in
bytes V1, V2, V3, and V4, as well as all ones in
the entire VT synchronous payload envelope. A
VT-Path AIS failure is declared when the VT-
Path AIS defect persists for 2.5 +/- 0.5 seconds.
Summary of Contents for 1200287L1
Page 10: ...x MX2800 STS 1 User Manual 61200659L1 1...
Page 18: ...Table of Contents xviii MX2800 STS 1 User Manual 61200659L1 1...
Page 22: ...List of Tables xxii MX2800 STS 1 User Manual 61200659L1 1...
Page 90: ...Chapter 3 Configuration 3 44 MX2800 STS 1 User Manual 61200659L1 1...
Page 134: ...Chapter 6 Diagnostics 6 12 MX2800 STS 1 User Manual 61200659L1 1...
Page 140: ...Chapter 7 Circuit and Network Redundancy 7 6 MX2800 STS 1 User Manual 61200659L1 1...
Page 146: ...Chapter 8 Power Loss Recovery 8 6 MX2800 STS 1 User Manual 61200659L1 1...
Page 160: ...Chapter 9 Transaction Language 1 TL1 9 14 MX2800 STS 1 User Manual 61200659L1 1...
Page 164: ...Appendix A Pinouts A 4 MX2800 STS 1 User Manual 61200659L1 1...
Page 168: ...Appendix B Specifications Summary B 4 MX2800 STS 1 User Manual 61200659L1 1...
Page 174: ...Appendix C Acronyms Abbreviations C 6 MX2800 STS 1 User Manual 61200659L1 1...