System 75 XE to R8si (Blowback)
Task List: System 75 XE to R8si
258
SI Installation and Upgrades
June 2004
About fiber-optic cables
NOTE:
It is important to label every cable that you install. For details, refer to the section, Labels
for Fiber-Optic Cables, in Appendix E of DEFINITY® Communications System Generic 3
V4 Implementation (555-230-655).
NOTE:
Throughout these procedures, remember to keep track of which fiber is attached 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 (that is 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
Figure 59, Fiber-Optic Connections PPN to EPN (standard/high
reliability adjacent cabinets),
on page 260.
NOTE:
For implementation details, refer to the “Fiber Link Administration” sections of
DEFINITY® Communications System Generic 3 V4 Implementation (555-230-655).
NOTE:
These distance limitations are approximate measurements of the actual fiber right-of-way
(not of the shortest linear distance) between the two endpoints.
Connecting standard or high reliability
adjacent cabinets
When a standard-reliability PPN and EPN are collocated, one fiber-optic cable (FL2P-P-XX) and two
lightwave transceivers (9823-type) are required to connect the EPN.
NOTE:
For the FL2P-P-XX fiber-optic cable, the -XX suffix represents the length of the cable in
feet. Based on floor-plan considerations, the length of these cables may vary. However,
20-foot cables are normally adequate for a Release 8si with two port networks.
1
Behind control cabinet A of the single-carrier PPN (see
Figure 58, Standard-Reliability Release
8si with Two Port Networks,
on page 259 and
Figure 59, Fiber-Optic Connections PPN to EPN
(standard/high reliability adjacent cabinets),
on page 260):
Table 12: Maximum fiber cable lengths
Transceiver type
Maximum distance
9823-A Lightwave transceiver
4900 feet (.9 mile)
9823-B Lightwave transceiver
25,000 feet (4.7 miles)
