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
5-4Read This First
5
Earlier versions of lightwave transceivers inc lude the 4-series transceivers (4A
through 4F). These transceivers suppor t fiber connections up to 7,000 feet (2134
m) apart; whereas the 9823A supp orts connections up to 5,000 feet (1524 m),
and the 9823B suppor ts connections up to 25,000 fe et (7620 m). A single mode
fiber transceiver (300A) sup ports distances of up to 115,000 feet (21.7 miles,
35 km). If the site inspection reveals that the old er 4-series transceivers reside in
the system, Order the correct transc eivers according to a separate PEC.
NOTE:
Using the 300A may require 5 or 10 d B attenuators. Contact your Lucent
Technologies representative for more information.
NOTE:
The 9823A transceiver is
not
a direct replacement for the 4-series
transceiver (since a p air of 9823A transceivers

cannot

replace a pair of
4-series transceivers supp orting a connection o f between 5,000 feet
(1524 m) and 7,000 feet (2134 m)).
Power and Ground
The new multicarrier PPN cabinet or any EPN cabinet ad ded for the upg rade can
be either AC- or DC-powered. If an added cab inet is powered differently from the
existing cabinets, the existi ng cabinets do not h ave to be converted sinc e mixed
power configurations are allowed . However, the system’s power and grounding
must be modified so that th e AC-powered cabinets are g rounded to the same
single-point ground point as the DC-powered c abinets.
If a new AC-powered cabinet is to be added, provide a separate AC receptacle
to support the new cab inet. This AC receptacle must not b e shared with any
other equipment and must not b e controlled by a wall swi tch. For the
convenience and safety of equipment-room personnel, the receptacle should not
be located under the MDF.
NOTE:
The new AC-powered PPN for a Release 8 upgrade has different power
requirements than the G2 system. Refer to the

DEFINITY Enterprise

Communications Server Release 8 System Description Pocket Reference

for information.
DC Isolator
Each device connec ted to a DC-powered c abinet, from the asynchronous EIA
RS-232 interface, requires a 116A isolator. Insert the isolator at the RS-232
interface between the d evice and the interface c onnector to isolate ground
between the system and external ad juncts.