Nortel Networks NTRN10AN, 3500 manual EC-1x12 circuit pack NTN436DA

3-84Hardware feature descriptions

Note 2: For Nortel Networks interworking and multi-vendor network scenarios, DCC interoperability can be achieved with the appropriate provisioning. See Optical Networks Data Communications Network Planning Guide, NTR710AM.

Alarm LED definitions

The following table provides a list of the EC-1x3 circuit pack LEDs. See Figure 3-28 on page 3-47for the EC-1x3 circuit pack faceplate layout showing the location of the LEDs.

LED	Color	Description
Status	Red	Circuit pack failure
Active	Green	Circuit pack equipment is active and at least one
		EC-1 line facility is in service with at least one
		cross-connect
LOS(1-3)	Yellow	Loss of signal on the port

EC-1x12 circuit pack (NTN436DA)

The EC-1x12 circuit pack receives and transmits twelve EC-1 signals from external equipment and provides accessibility to VT1.5/s or STS-1s within the network element. This circuit pack is fully bidirectional. The facility signal attributes for an EC-1x12 circuit pack facility are provisionable.

Equipping rules

Connectivity for the 12 EC-1 signals at each slot is through the BNC 12-Port Front I/O module (NTN452JA) on the OPTera Metro 3500 Shelf (NTN476DA). On the OPTera Metro 3500 Universal Shelf (NTN476AH) you must use the BNC 12-Port Front Enhanced I/O module (NTN452JH) or the BNC 12-Port Rear I/O module (NTN452KA).

The EC-1x12 circuit pack can be installed in slots 3 through 10. EC-1x12 circuit packs are installed in pairs. The first EC-1x12 circuit pack of the pair is installed in an odd slot. The second EC-1x12 circuit pack of the pair is installed in the adjacent even slot. The second EC-1x12 circuit pack functions as the protection EC-1x12 circuit pack for the working circuit pack in the odd slot.

The maximum number of working EC-1x12 circuit packs that can be inserted in a shelf is four.

See Table 3-3 on page 3-6for operational temperature ranges.

Note 1: If there is a 1-28 DS1 I/O module installed, and if slots 5 and 6 are not equipped with DS1 mappers, you may not install EC-1x12 circuit packs in slots 5 or 6 (there is not enough room for slot 5 or slot 6’s BNC I/O modules).

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