DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance for csi systems
1-12csi design
1
— Four administerable netcon c hannels are accessible through the
TN798 processor and can b e used for such asynchronous adjuncts
as the G3 Management Terminals (SAT), Terranova family of
Windows-based applications, BCMS terminals, BCMS VU, system
printers, PMS links, and CDR devices.
— The TN798 has separate RS232 ports for the external modem and
CDR port.
■The AC Power Supply Unit (650A) provides:
— Multiple DC outputs: ± 5. 1 VDC, -48 VDC, +8-14 VDC (fan speed
control), and -150 to -115 VDC (Neon bus).
— Three switch-selectable AC ring outp uts: 85 VAC @ 20 Hz (North
America), 72 VAC @ 25 Hz (international), and two 28 VAC @ 50 Hz
(France).
— For LED indicators and interpretation, see ‘‘Power Supp ly LEDs’’ on
page 1-90.
■There is no battery backup in this switch. If power is interrup ted for more
than 50 milliseconds, all c alls are dropped and memory is lost. The only
remedy for maintaining servic e without interruptions is to have a ded icated
uninterruptable power sup ply (UPS) between the AC source and the
switch.
■The system does not support either Hi gh or Critical Reliability d uplication
or expansion options.
■The maximum configuration is 3 cab inets (A-C) and a total of 28 slots (2
slots are reserved for the processor a nd tone clock c ircuit packs).
■The csi uses an external modem for alarm reporting to INADS and remote
access, rather than the built-i n modem on the processor c ircuit pack. The
U. S. Robotics Model 839 Sportster 33.6 Fax Modem is the exter nal
modem recommended for use with csi. This modem has a slightly d ifferent
initialization string from other modems used with other DEFINITY products.
Refer to the ‘‘change system-parameters maintenance’’ section in Chapter
2, ‘‘Maintenance Commands’’ for administration and initialization details.