Nortel Networks OPTera Metro 3500 - Manual (Page 300)

3-72 Hardware feature descriptions
OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Alarm LED definitions
The following table lists the OC-48 DWDM interface circuit pack LEDs.
Equipping rules
The OC-48 DWDM circuit pack are equipped in slots 11 and 12 of the OPTera
Metro shelf.
Note: Requires the shelf to be equipped with VTX-series circuit packs in
slots 13 and 14.
See Table 3-3 on page 3-6 for operational temperature ranges.
OC-12 optical interface circuit pack
(NTN404AA, BA, CA, DA, JA, KA, LA, MA)
Four OC-12 circuit packs, OC-12 IR (NTN404KA), IC (NTN404MA), LR
(NTN404JA), and ER (NTN404LA) support the VT1.5, STS-1, STS-3c, and
STS-12c signal rate as well as STS-12c performance monitoring.
OPTera Metro 3500 continues to support the OC-12 IR (NTN404BA), IC
(NTN404DA), LR (NTN404AA), and ER (NTN404CA) optical interface
circuit packs, which support the VT1.5, STS-1, and STS-3c, signal rates and
associated PMs.
The central wavelength of the transmit optics is 1310 nm for the Interconnect
and LR optical reaches, and is 1550 nm for the ER optical reach.
Note 1: The OC-12 circuit pack is considered a core circuit pack when
provisioned in slots 11 and 12. In addition, the OC-12 circuit pack can be
used as a tributary circuit pack when provisioned in slots 3 to 10.
Note 2: The VTX-48e circuit packs supports the OC-12 line rate for the
optics in slots 11 and 12.
Optical transmit
The OC-12 interface receives one STS-12 or STS-12c from each STX and
VTX-series circuit packs. The OC-12 interface converts the STS-12 or
STS-12c into an OC-12 optical signal. The OC-12 optical signal is then
transmitted on the optical transmit channel.
LED Color Description
Status (top) Red Circuit pack failure
Yellow Loss of signal
Status (bottom) Green In service and carrying traffic