Expansion Cabinets; Printed Circuit Boards (Pcbs); Maximum Station/Line Capacities - Toshiba STRATA DK14 Installation And Maintenance Manual

DK424i Configuration

Maximum Station/Line Capacities

Expansion Cabinets

Expansion cabinets can be added to increase station and CO line capacity of systems that allow
multiple cabinets.
Refer to the following section for station/line capacities.
and lines allowed when additional cabinets and PCBs are used.
CABINET NO.
2 3 4 5 6 7
S_01 S_02 S_03 S_04 S_05
S_06 S_07 S_08 S_09 S_10
S_01
Figure 6-3 DK424i Expansion Cabinet Interior

Printed Circuit Boards (PCBs)

PCBs are installed in the cabinets to provide interface for stations, lines, and peripherals. Each
PCB measures 7.5 x 5.5 inches (190 x 140 mm) and mounts in the slot with a 44-pin backplane
connector. PCB external connections to station equipment are made to the Main Distribution
Frame (MDF) using industry-standard connectors.
Maximum Station/Line Capacities
Attaining maximum system capacities depends on power consumption of a particular
configuration. Configurations for a fully expanded system can range from 200 lines or 336
stations. One universal slot is required for Remote Maintenance PCB with B3CAU/B3CBU and
B5CAU/B5CBU, but is optional for B1CU and B2CAU/B2CBU.
A summary of the maximum number of lines and stations by processor is shown in
Table 6-4
Cabinets
Maximum CO Lines
Maximum Stations
Stations + Analog Lines
Stations + T1 &/or PRI Lines
* Configuration numbers marked with a * do not include a slot for the Remote Maintnenace PCB. All other
configurations (without an *) assume that a slot is provided for the Remote Maintenance PCB.
6-4
Figure 6-3 shows an example of the interior of an expansion cabinet.
S_02 S_03 S_04 S_05
Strata DK424i Maximum Capacities
B1CU
32
56
56 or 64*
64
Table 6-4
S_06 S_07 S_08 S_09 S_10
B2CAU/B2CBU
104
112
104 or 112*
128
shows the number of stations
DC OUT
DC OUT
-27V1
-27V1
-27V2
-27V2 AC IN
BATT
+
+
-27V3
-27V3
-
-
-27V4
-27V4
POW
POW
+5V
AC IN
+5V AC IN
-5V
-5V
P.F.
P.F.
POWER
RESET
POWER
RESET
ON
ON
EXP
EXP
BASE
BASE
OFF
FG OFF
FG
5002
5002
Table
B3CAU/B3CBU B5CAU/B5CBU
120 200
192 336
216 376
248 432
Strata DK I&M
5003
6-4.
6/00