Toshiba Strata DK 24, Installation And Maintenance Manual

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6-8
INSTALLATION-PCB
SECTION 400-096-206
SEPTEMBER 1992
5 ELECTRONIC TELEPHONE INTERFACE
UNIT (PEKU)
5.00 General
5.01 The Electronic Telephone Interface Unit
(PEKU) provides eight ports for electronic tele-
phones. Depending on system configuration, DK24
can support up to four PEKUs with PCTU (1, 2, 3,
or 4) and three PEKUs with PCTUS; DK56 can
support up to eight PEKU PCBs, and DK96 up to
twelve PEKU PCBs.
5.02 The number of electronic telephones that can
be connected to PEKU PCBs in a system depends
on the series of telephones used. This is due to
power capacity. It is recommended that the current
6500-series be used, because this series con-
sumes the least amount of power. The maximum
number of 6500-series Electronic Telephones al-
lowed in DK24 is 32, in DK56 is 64, and in DK96 is
96. If using an electronic telephone series other
than, or mixed with, the 6500-series, see Section
400-096-204, Worksheet 7.
5.03 The PEKU can be configured for Off-hook
Call Announce (to receive OCA calls) by installing
an EOCU. It can also be configured to support an
HDSS console, a Door Phone/Lock Control Unit
(HDCB), an external amplifier, and an external
background music (BGM) source. HDSS consoles,
external amplifiers, HDCBs, and the BGM source,
are wired directly to the PEKU and require no
additional hardware, but do require specific ports/
circuits.
5.04 PEKU controls and interface connectors are
shown in Figure 6-5 and described in Table 6-B.
5.10 PEKU Hardware Options
5.11 The PEKU supports the following hardware
options:
FIGURE 6-5
PEKU CONTROLS AND INTERFACE CONNECTORS
P20
P60
W9, cut for
HDCB option
BACKPLANE CONNECTOR P50
P40
P10
SW1
50-PIN AMPHENOL CONNECTOR (FEMALE)
W9
W5
W5, cut for
BGM option
EKT
DSS