Nortel Networks NTRN10AN, 3500 manual LED Name LED Color On condition description, Los

3-112Hardware feature descriptions

For more information, refer to:

•DSM DS1x84 interface specifications on page 4-33in Part 2 of this guide

•OC-3x4 optical interface specifications on page 4-10in Part 2 of this 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 Optical connector kits on page 8-18).

See Table 3-3 on page 3-6for 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.

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.
LOS	LOS Yellow	Loss of Signal on the OC3 facility.
Sync Ref Fail	Yellow	Loss of synchronization reference signal (own
		line).
OAM fail	Yellow	OAM link to SPx failed.

OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004