Avaya DEFINITY Server R Manual page 307

Interconnect Port Networks with Fiber Optic Cabling
NOTE:
Keep track of which fiber attaches to which connector on each lightwave
transceiver. This section provides figures offering the suggested way of
making these connections.
The connectors on the lightwave transceivers are labeled either "TX"
(transmit) or "RX" (receive), while the fibers attached to each connector are
numbered either "1" or "2." A viable fiber connection is only made when both
fibers in each cable ("1" and "2") route from the "TX" connector of a port
network to the "RX" connector of its adjacent port network. For an example,
refer to
NOTE:
When finished, refer to
administer the fiber links.
Collocated Port Networks
For a critical reliability system with 1 collocated EPN, use 2 fiber optic cables and
4 lightwave transceivers to directly connect the networks. For a critical reliability
system with 2 collocated EPNs, use 6 fiber optic cables and 12 lightwave
transceivers to directly connect the networks.
NOTE:
Based on floor-plan considerations, the length of these cables may vary.
Twenty-foot (6.1 m) cables are normally adequate for 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, route 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.
If a "DEFINITY style" PPN cabinet is collocated with either a small cabinet,
medium cabinet, or single-carrier cabinet stack, route 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 critical reliability system with 1 fiber-remoted EPN, use 4 fiber optic cables, 4
lightwave transceivers, and 4 lightguide interconnect units (provided by the PSC).
For a critical reliability system with 2 fiber-remoted EPNs, use 12 fiber optic
cables, 12 lightwave transceivers, and 12 lightguide interconnect units (provided
by the PSC).
For fiber-remoted cabinets, route the cables down the cable tray and out the
bottom of the cabinet to the MDF to the lightguide interconnect units.
555-233-115
Figure 5-29 on page 5-119.
Appendix A, ''Fiber Link Administration'' to
Issue 5 October 2002
5-115