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DEFINITY Enterprise Communications Server Release 8.2
Upgrades and Additions for R8r
555-233-115
Issue 1
April 2000
Multicarrier G2 Universal Module to R8r EPN
5-56High Reliability
5
Collocated Port Networks
For a high reliability system with 1 collocated expansion port network, use 1 fiber
optic cable and 2 lightwave transceivers to directly connect the networks.
For a high reliability system with 2 collocated expansion port networks, use 3
fiber optic cables and 6 lightwave transceivers to directly connect the networks.
NOTE:
Based on floor plan considerations, the length of these fiber cables may
vary. 20 foot (6.1 m) cables are normally adequate for a Release 8 with
2 port networks.
For collocated cabinets, the fiber optic cables should be routed directly from the
PPN to the EPN cabinet. If a “DEFINITY style” PPN cabinet is collocated with
another “DEFINITY style” EPN cabinet, the preferred routing is to run the cables
up
the cable tray and out the top of the PPN cabinet. The cables are then run to
the other cabinet, through the top of the cabinet, and down the cable tray to the
desired carrier level.
NOTE:
Refer to
DEFINITY Enterprise Communications Server Release 8 Installation
and Test for Multicarrier Cabinets
, for additional guidelines about fiber
routing.
If a “DEFINITY style” PPN cabinet is collocated with either a small cabinet,
medium cabinet, or single-carrier cabinet stack, the preferred routing is to run the
cables
down
the cable tray and out the bottom of the PPN cabinet. The cables
are then run to the EPN cabinet and up the outside of the rear panels to the
desired carrier level.
Fiber-Remoted Port Networks
For a high reliability system with 1 fiber-remoted expansion port network, 2 fiber
optic cables, 2 lightwave transceivers, and 2 lightguide interconnect units
(provided by the PSC) are required.
For a high reliability system with 2 fiber-remoted expansion port networks, 6 fiber
optic cables, 6 lightwave transceivers, and 6 lightguide interconnect units
(provided by the PSC) are required.
For fiber-remoted cabinets, route the cables down the cable tray and out the
bottom of the cabinet to the cross-connect field where the lightguide interconnect
units are located.
In either case, use cable ties to secure the cable against the walls of the cable
tray at the cable tie positions built into the trays.