Nortel Networks OPTera Metro 3500 - Manual (Page 329)

Hardware feature descriptions 3-101
Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Protection switch extender (PSX)
(NTN413AA)
The PSX circuit pack (NTN413AA) houses all of the relays that perform DS1
equipment protection switching for DS1 ports 29 to 84. The relays are
controlled by the PSC.
Equipping rules
The PSX must be installed in slot 17 if DS1 ports 29 to 84 are being used. A
PSX requires a PSC installed on the shelf.
See Table 3-3 on page 3-6 for operational temperature ranges.
Note: PSX circuit pack is supported on OPTera Metro 3500 shelves
equipped with VTX- series circuit packs in slots 13 and 14.
OMX + Fiber Manager 4CH
(NT0H32AE, BE, CE, DE, EE, FE, GE, HE)
The OMX + Fiber Manager 4CH offers superior fiber management
capabilities. They have locking latches to prevent trays from being pulled out
completely. The OMX + Fiber Manager 4CH is used with OPTera Metro 3500
shelves and is a stand-alone unit. The OMX + Fiber Manager 4CH multiplexes
and demultiplexes up to four optical channels in one band.
Note: If your system is equipped with OMX + Fiber Manager 4CH
equipment drawers, then you do not require separate OMX shelves
(NTN449ZW) or Fiber Manager trays (NT0H57BB).
The distinguishing features of the OMX + Fiber Manager 4CH are:
• Each OMX + Fiber Manager 4CH is a 1U high external drawer that
contains optical filters, a small patch panel with bulkhead connectors, and
fiber management components. The drawers can be mounted anywhere in
a rack. Nortel Networks recommends that you install the trays directly
beneath the shelf.
• Each OMX + Fiber Manager 4CH uses bulkhead connectors and patch
cords to connect circuit packs.