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FIGURE ‘I-7-ELECTRONIC TELEPHONE WALL
MOUNTING BASE ROTATION
3.20 Standard Telephone Connections
3.21 Standard telephones areconnected to PSTU
or PESU (via the MDF) with standard twisted-pair
jacketed telephone cable. Single-pair wiring is
required for telephone connection (refer to Wiring
Diagrams, Section 200-096-209, for wiring/inter-
connecting details).
I
NOTE:
See Section 200-096-209 for secondarypro-
tector information.
3.22 The standard telephone cable’s overall loop
resistance, connected on- or off-premises, is 300
ohms maximum, including the telephone resis-
tance. This also applies to all devices connected to
PESU or PSTU standard telephone circuits.
3.23 Astandard telephone connected off-premises
via the telephone network should interface with
INSTALLATION-TELEPHONE
SECTION 200-096-207
FEBRUARY 1991
OL13A lines (or equivalent) and connect to an
RJ21 X FIC jack (or equivalent). _
3.30 DSS Console Connections
3.31 DSS consoles must be located adjacent to
an electronic telephone (preferably an LCD model).
DSS consoles are connected to the PEKU (via the
MDF) using standard 2-pair, twisted pair, jacketed
telephone cable. To connect the console use only
the data pair of circuits 7 and 8. To accommodate
the DSS console connection, the instrument end of
the cable should be terminated in a modular sta-
tion connector block (RJ-11). Refer to Wiring Dia-
grams, Section 200-096-209, for wiring/intercon-
necting details.
3.32 The overall length of the DSS console cable
run from the KSU to the console must not exceed
500 feet (152 M), if using 24 AWG cable.
CAUTION!
When installing the DSS console cable, do
not run parallel to and within 3 feet of an
AC power line. AC power lines should be
crossed at right (90”) angles only. Avoid
running DSS console wire pairs near de-
vices that generate electrical noise, such
as neon or fluorescent light fixtures.
3.33 DSS Console Configuration
3.34 The following considerations should be made
when installing DSS consoles:
l
A PEKU PCB is required to use the DSS console.
(The DSS switch on the PEKU must be set to
DSS.)
l
PESU does not support DSS consoles.
l
A maximum of four DSS consoles are allowed
per system (three in a DK24 if a PCTUS is used).
l
Two PEKU ports are required for each DSS
console (always circuits 7 and 8).
l
Only one DSS console may be connected to a
PEKU.
3.35 DSS Programming Overview
Program 28 I
l
Assigns DSS console(s) to electronic tele-
phones.
7-5