Nortel Networks 3500 User Manual
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.
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
for the EC-1x3 circuit pack faceplate layout showing
the location of the LEDs.
EC-1x12 circuit pack
(NTN436DA)
(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.
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).
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.
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.
in a shelf is four.
See
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).
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
EC-1 line facility is in service with at least one
cross-connect
LOS(1-3)
Yellow
Loss of signal on the port