Nortel Networks 3500, NTRN10AN manual Protection switch extender PSX NTN413AA

Hardware feature descriptions 3-101

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 3-6for 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.

Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004