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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
5-4Read This First
5
Earlier versions of lightwave transceivers include the 4-series transceivers (4A
through 4F). These transceivers support fiber connections up to 7,000 feet (2134
m) apart; whereas the 9823A supports connections up to 5,000 feet (1524 m),
and the 9823B supports connections up to 25,000 feet (7620 m). A single mode
fiber transceiver (300A) supports distances of up to 115,000 feet (21.7 miles,
35 km). If the site inspection reveals that the older 4-series transceivers reside in
the system, Order the correct transceivers according to a separate PEC.
NOTE:
Using the 300A may require 5 or 10 dB 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 pair of 9823A transceivers
cannot
replace a pair of
4-series transceivers supporting a connection of between 5,000 feet
(1524 m) and 7,000 feet (2134 m)).
Power and Ground
The new multicarrier PPN cabinet or any EPN cabinet added for the upgrade can
be either AC- or DC-powered. If an added cabinet is powered differently from the
existing cabinets, the existing cabinets do not have to be converted since mixed
power configurations are allowed. However, the system’s power and grounding
must be modified so that the AC-powered cabinets are grounded to the same
single-point ground point as the DC-powered cabinets.
If a new AC-powered cabinet is to be added, provide a separate AC receptacle
to support the new cabinet. This AC receptacle must not be shared with any
other equipment and must not be controlled by a wall switch. 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 connected to a DC-powered cabinet, from the asynchronous EIA
RS-232 interface, requires a 116A isolator. Insert the isolator at the RS-232
interface between the device and the interface connector to isolate ground
between the system and external adjuncts.