Nortel Networks OPTera Metro 3500 - Manual (Page 312)

3-84 Hardware feature descriptions
OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
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 3-47 for the EC-1x3 circuit pack faceplate layout showing
the location of the LEDs.
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 3-6 for 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).
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