Appendix
A-2
FrameSaver NP 64+ User’s Manual - Installation Guide
980-001-0221C
March
2001
DSU Fault
DSU Fault shows the highest priority DSU fault currently detected. This is displayed
on the DSU Test and ISDN Status / Test screens.
DSU Loop
DSU Fault shows the highest priority DSU fault currently detected. This is displayed
on the DSU Test and ISDN Status / Test screens.
Table A-1 DSU Fault
Display
Description
DSU Fault
Failure of DSU related hardware detected by the unit.
Carrier Loss
Detected loss of DDS facility.
Out of Service
Threshold of errors exceeded on DDS facility
Table A-2 DSU Loop
Display
Description
CSU Lp to Netw
Telco initiated loopback in place at the unit’s CSU, toward the Network.
DSU Lp to Netw
Telco initiated loopback in place at the unit’s DSU, toward the Network.
