Avaya DEFINITY Server CSI Maintenance Manual page 38

Maintenance for CSI systems
There is no battery backup in the Avaya Definity Server CSI. If power is
interrupted for more than 50 milliseconds, all calls are dropped and
memory is lost. To maintain service without interruptions, install a
dedicated uninterruptable power supply (UPS) between the AC source and
the switch.
The system does not support High or Critical Reliability duplication nor
expansion options.
The maximum number of cabinets is 3 (A-C). The maximum number of
slots is 28. Two slots are reserved for the processor and tone clock circuit
packs.
The CSI uses an external modem for reporting alarms to INADS and for
remote access, rather than the built-in modem on the processor circuit
pack. The U.S. Robotics Model 839 Sportster 33.6 Fax Modem is the
external modem recommended for use with CSI. This modem has a slightly
different initialization string from other modems used with other Avaya
Definity Server products. See
on page 185
38
Issue 5 October 2002
''change system-parameters maintenance''
in for administration and initialization details.
555-233-119