Protection Switching - Nortel NTRN10AN Planning Manual

3-112 Hardware feature descriptions
For more information, refer to:
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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.
Alarm LED definitions
The following table provides a list of LEDs of the DSM DS1x84 TM.
LED Name
Status
Active
LOS
Sync Ref Fail
OAM fail
OPTera Metro 3500 Multiservice Platform
DSM DS1x84 interface specifications on page 4-33
OC-3x4 optical interface specifications on page 4-10
guide
Note 1: The NTN313AC circuit pack comes with LC connectors
pre-installed.
Note 2: If you are ordering the NTN313AA circuit pack, you must also
order the required optical connector kit (see
8-18).
Table 3-3 on page 3-6
LED Color
Status Red
Active Green
LOS Yellow
Yellow
Yellow
NTRN10AN
for operational temperature ranges.
ON condition description
Circuit pack is failed
Circuit pack is IS and ACT, OC3 facility and at
least one DS1 facility are IS or OOS-AU and cross
connected.
Loss of Signal on the OC3 facility.
Loss of synchronization reference signal (own
line).
OAM link to SPx failed.
Rel 12.1 Standard Iss 1 Apr 2004
in Part 2 of this guide
in Part 2 of this
Optical connector kits on page