Common Control Pcbs; Station And Co Line Pcbs - Toshiba Strata DK24 Installation And Maintenance Manual

INSTALLATION-CONFIGURATION
SECTION 400-096-204
SEPTEMBER 1992
DK24 (PCTUS1)
CO Lines Stations
16 16
12 24
24
8
24
4
24
0
NOTES:
1. The station capacities apply to any combination of standard telephones, digital telephones
(2000- and 1000-series) and 6500-series electronic telephones. Station capacities using
other Toshiba electronic telephones are given on Worksheet 7.
2. Installing a TIE line (PEMU) PCB or an peripheral interface (PIOU/PIOUS/PEPU) PCB
reduces available CO lines by four or available station ports by eight.
3. The DK24's 32-station limit is a result of power supply capacity.
phones that can exist in each STRATA DK system.
Due to power availability, the numbers decrease if
using 2000-, 3000-, 6000-, or 6005-series elec-
tronic telephones, a PEMU PCB, or digital tele-
phones equipped with Integrated Data Interface
Units (PDIU-DIs or PDIU-DI2s). When mixing dif-
ferent series telephones and/or if a PEMU PCB is
installed, use Worksheet 7 in the Configuration
Guide to verify that the power supplied is greater
than the power used.

1.20 Common Control PCBs

1.21 DK systems must be configured with one of
the following five common control PCBs: PCTU1,
PCTU2, PCTU3, PCTU4, or PCTUS. PCTU1, 2, 3,
and 4 have the same configuration capacity and
can be used in all three system models. The PCTU1
provides Release 1 features; PCTU2 provides
Release 2 features; PCTU3 provides Release 3
features; and PCTU4 provides Release 4 features.
Designed for use with the DK24 system only, the
PCTUS provides Release 2 features. Its configura-
tion capacity is less than the other common control
PCBs. If a PCTUS is installed in DK56 or DK96, the
system will not operate correctly. Station, line,
peripheral, and feature capacities for each com-
mon control PCB are shown in Table 4-B. These
Table 4-A
DK24/56/96 MAXIMUM CONFIGURATIONS
DK 24 (PCTU 1, 2, 3, or 4)
CO Lines Stations
16 16
12 24
32
8
3
32
4
3
32
0
4-2
DK56 (PCTU 1, 2, 3, or 4)
CO Lines Stations
20 24
16 32
40
12
48
8
56
4
0 64
capacities reflect maximum stand-alone capacities
and do not indicate combined capacity of the many
possible configurations when mixing options, sta-
tions, and lines. Use the Configuration Guide later
in this chapter to determine combined capacities
for a system.

1.30 Station and CO line PCBs

1.31 The Digital Telephone Interface Unit PCB
(PDKU) provides eight digital telephone circuits.
The Electronic Telephone Interface Unit PCB
(PEKU) provides eight electronic telephone cir-
cuits. The Standard Telephone Interface Unit PCB
(PSTU) has eight standard telephones circuits.
The Standard/Electronic Telephone Interface Unit
PCB (PESU) provides two standard and four elec-
tronic telephone circuits. (The PESU is intended for
configurations that require less than three standard
telephone ports and/or less than five electronic
telephone ports.)
1.32 Up to four CO lines can be connected with the
CO line Interface Unit PCB (PCOU).
1.33 With the exception of the common control
PCB (PCTU) described which has its own dedi-
cated slot, any of the PCBs noted above can be
DK96 (PCTU 1, 2, 3, or 4)
CO Lines Stations
36 40
32 48
28 56
24 64
20 72
80
16
88
12
96
8