Toshiba Strata DK 24, Installation And Maintenance Manual

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6-11
INSTALLATION-PCB
SECTION 400-096-206
SEPTEMBER 1992
digital and electronic telephone speakers and/
or PIOU, PIOUS, PEPU PCBs. For Release 3
and 4 use Program 19 to identify BGM slot
number.
5.16 External Amplifier Configuration. The
PEKU does not have to be configured to support an
external amplifier, which is available with PCTU3
and PCTU4. As many as four amplifiers can be
installed, and each requires dedicated use of two
ports: 09/10, 17/18, 25/26, or 33/34. Refer to Pe-
ripherals Installation, Section 400-096-208, for in-
stallation procedures.
5.20 PEKU Installation Procedures
5.21 Install the PEKU in accordance with the fol-
lowing steps:
1) Remove the PCB from its protective packag-
ing.
2) Ensure the PEKU has been configured for the
appropriate hardware options (refer to Para-
graph 5.10).
NOTE:
Ensure the PEKU’s component side is facing
right when installing it in the KSU.
3) Insert the PEKU into the appropriate slot (refer
to Paragraph 2.12), and apply firm, even pres-
sure to ensure proper mating of connectors.
4) After installing the PEKU, gently pull the PCB
outward. If the connectors are properly mated,
a slight resistance will be felt.
5.30 PEKU Wiring
5.31 Refer to PEKU Section 400-096-209, for PEKU
wiring/interconnecting details.
5.40 PEKU Programming Overview
5.41 The following programming parameters may
be specified for the PEKU:
Program 03
•
Specify Code 21 to indicate a station line PEKU.
•
Specify Code 22 to indicate a PEKU configured
for OCA.
•
Specify Code 23 to indicate a PEKU configured
for an HDSS console.
•
Specify Code 24 to indicate a PEKU configured
for OCA and an HDSS console.
•
Door phones, the BGM source connection, and
external amplifiers do not require a special code.
Programs 10-2 and 19
•
Used for BGM connection.
Programs 10-3
•
Used to Assign amplifiers to ports.
Programs 28 and 29
•
Used for HDSS console assignments.
Programs 77-1, 77-2, 79
•
Used for HDCB and door phone ringing assign-
ments.
6 STANDARD TELEPHONE INTERFACE
UNIT (PSTU, 1 & 2)
6.00 General
6.01 The Standard Telephone Interface Unit
(PSTU) provides an interface between standard
telephones or two-wire (one-pair) devices and the
system. Each PSTU PCB adds eight standard
telephone lines to the system. There is no limit,
other than the station size constraints of the PCTU
or PCTUS PCB, to the number of PSTU PCBs that
can be installed in the system.
NOTES:
1. For the system to recognize the Dual-tone
Multi-frequency (DTMF) tones generated
by a standard telephone (or any other
device connected to a PSTU port), a DTMF
Receiver Unit (CRCU-4 or CRCU-8) must
be installed on the Common Control Unit
(PCTU or PCTUS). Refer to Paragraph 3.
2. The PSTU does not support Door Phone/
Lock Control Units (DDCB or HDCB).
6.02 PSTU controls are shown in Figure 6-7 and
described in Table 6-C.
6.10 PSTU (1 and 2) Hardware Options
6.11 There are two PSTU versions (1 and 2) that