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DEFINITY Enterprise Communications Server Release 8.2
Upgrades and Additions for R8r
555-233-115
Issue 1
April 2000
Upgrading R5si/R6si to R8r EPN and Adding Memory
3-27Release 5/6si to Release 8r
3
Interconnect Port Networks with Fiber Optic
Cabling — High Reliability Release 8r
1. Keep track of which fiber attaches to which connector on each lightwave
transceiver.
This section provides figures showing typical ways of making these connections.
The connectors on the lightwave transceivers are labeled “TX” (transmit) or “RX”
(receive), while the fibers attaching to each connector are numbered “1” or “2.”
See
Figure 3-10
.
Collocated Port Networks
For a high reliability system with 1 collocated EPN, use 1 fiber optic cable and 2
lightwave transceivers, or 1 single-mode fiber optic cable and 2 single-mode
lightwave transceivers to directly connect the networks.
For a high reliability system with 2 collocated EPN, use 3 fiber optic cables and 6
lightwave transceivers, or 3 single-mode fiber optic cables and 6 single-mode
lightwave transceivers to directly connect the networks.
NOTE:
Based on floor plan considerations, the length of these cables may vary.
20-foot (6.1 m) cables are normally adequate for a Release 8r with 2 port
networks.
For collocated cabinets, route the fiber optic cables directly from the PPN to each
EPN cabinet. Since a Release 8r PPN cabinet is collocated with a 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.
Fiber-Remoted Port Networks
For a high reliability system with 1 fiber-remoted EPN, use 2 fiber optic cables, 2
lightwave transceivers, and 2 lightguide interface units (provided by the PSC).
For a high reliability system with 2 fiber-remoted EPNs, use 6 fiber optic cables, 6
lightwave transceivers, and 6 lightwave-interface units (provided by the PSC).
DS1 CONV-Remoted Port Networks
For a high reliability system with 1 DS1 CONV-remoted expansion port network,
use 2 DS1 CONV circuit packs (TN1654), 2 DS1 CONV-to-EI cables (846448637
and/or 846448645), 2 H-600-348 cables, from 1 to 4 pairs of channel service
units (CSUs), and from 1 to 4 pairs of wall-field cables (provided with the CSUs).
NOTE:
The TN1654 requires a TN573B Switch Node Interface circuit pack