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INSTALLATION-DK 16 KSU & PCB
SECTION 100-816-205
MARCH 1993
J40
J50
J20 JlO
FIGURE 5-14
OFF-HOOK CALL ANNOUNCE UNIT (EOCU)
INTERFACE CONNECTORS
pressure to ensure proper mating of connec-
tors.
4) After installing the PEKU, gently pull the PCB
outward. If the connectors are properly mated,
a slight resistance will be felt.
8.30 PEKU Wiring
8.31
Refer to PEKU Wiring Diagrams, Section
100-816-208,
for wiring/interconnecting details.
8.40 PEKU Programming Overview
8.41
The following parameters may be specified,
through programming, for the PEKU:
Program 03
0 Specify code 21 to indicate a station line PEKU.
l
Specify code 22 to indicate a PEKU configured
for OCA.
l
Specify code 23 to indicate a PEKU configured
for an HDSS console.
l
Specify code 24 to indicate a PEKU configured
for OCA and an HDSS console.
Program 1 O-2
l
Used for BGM connection.
Program 1 O-3
l
Used for external amplifier connection.
Program 19
l
Also used for BGM connection.
Programs 28 and 29
l
Used for HDSS assignments.
9 STANDARD TELEPHONE
INTERFACE UNIT (PSTU)
9.00 General
9.01
The Standard Telephone Interface Unit
(PSTU) provides an interface between standard
telephones or two-wire devices and the system,
and it must be installed in the Expansion Unit. The
PSTU PCB adds eight standard telephone lines to
the system. The PSTU can also support a Back-
ground Music (BGM) source.
NOTE:
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 (K4RCU) must be installed in the Base
Unit.
9.02 PSTU controls are shown in Figure 5-l 5 and
described in Table 5-C.
9.10 PSTU (1 and 2) Hardware Options
9.11
There are two PSTU versions (1 and 2): They
are identical except for the ring generator. The ring
generator on the original version (V.3) of PSTUl is
fixed at a 19OV P-P level, while the ring generator
on PSTUl (V.4) and PSTU2 can be set for 13OV P-
P or 19OV P-P. The
WI
jumper plug is used to set
the voltage level. Most standard telephones and
two-wire devices require the 19OV P-P level;
however, some devices may experience ring-trip
with 19OV P-P and they require the 13OV P-P level.
5-20