Nortel Networks 3500 User Manual
3-112 Hardware feature descriptions
OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
For more information, refer to:
•
in Part 2 of this guide
•
in Part 2 of this
guide
Note 1: The NTN313AC circuit pack comes with LC connectors
pre-installed.
pre-installed.
Note 2: If you are ordering the NTN313AA circuit pack, you must also
order the required optical connector kit (see
order the required optical connector kit (see
).
See
for operational temperature ranges.
Protection switching
DSM DS1x84 termination module protection switching is 1+1 non-revertive.
If a working DSM DS1x84 TM becomes defective, the traffic is switched to
the protection DSM DS1x84 TM. Switching can also take place under user
control.
If a working DSM DS1x84 TM becomes defective, the traffic is switched to
the protection DSM DS1x84 TM. Switching can also take place under user
control.
Alarm LED definitions
The following table provides a list of LEDs of the DSM DS1x84 TM.
LED Name
LED Color
ON condition description
Status
Status Red
Circuit pack is failed
Active
Active Green
Circuit pack is IS and ACT, OC3 facility and at
least one DS1 facility are IS or OOS-AU and cross
connected.
least one DS1 facility are IS or OOS-AU and cross
connected.
LOS
LOS Yellow
Loss of Signal on the OC3 facility.
Sync Ref Fail
Yellow
Loss of synchronization reference signal (own
line).
line).
OAM fail
Yellow
OAM link to SPx failed.