Beep Strap; Direct Station Selection (Dss) Console/System Connection; Ddss Console Connections - Toshiba Strata DK 280 Installation Manual

5.4.4 Beep Strap
A "beep" sounds whenever a dialpad button or feature
button is pressed on an electronic telephone. This
beep can be eliminated with the following procedure:
1. Remove the four captive screws securing the
telephone base to the telephone (Figure 5-l), and
remove the base.
2. Locate and cut the beep strap on the telephone
printed circuit board (PCS) (Figure 5-13).
3. Reinstall the electronic telephone base, and
secure in place using the four captive screws.
5.4.5 Microphone/Speaker Threshold
(Speakerphones only)
High ambient noise levels may cause the speaker on
the electronic telephone speakerphone models (the
EKT6510-S, EKT6520-S, and EKT6520-SD) to cut off
frequently. To make these telephones less sensitive to
noise and to prevent the cut-off, follow the steps
below:
1. Remove the four captive screws securing the base
to the telephone, and remove the base (Figure
5-i).
2. Locate the room noise switch on the printed circuit
board (PCB) inside the telephone, and push it
carefully to the HI (high) position (Figure 5-13).
3. Reinstall the telephone base and secure in place
using the four captive screws.
5.4.6 Handset Receiver Volume-up Strap
(Version 2 6500~series Telephones
Only)
For Version 2 (V.2) 6500series electronic telephones
only, the handset receiver volume can be increased
six decibels (db) by cutting a strap inside the
telephone. Cut the strap in accordance with the
following steps:
1. Remove the four captive screws securing the
telephone base to the telephone, and remove the
base (Figure 5-l).
2. Locate the R-UP strap on the printed circuit board
(PCB) inside the telephone, and cut it (Figure
5-l 3).
3. Reinstall the telephone base, and secure in place
using the four captive screws.
5.5 Direct Station Selection (DSS)
Console/System Connection
Strata DK280 systems configured with RCTUA can
support up to three DSS consoles, RCTUB up to four
DSS consoles, and systems with the RCTUC/D up to
eight consoles. There are two types of consoles: the
DDSS console and the HDSS console. The DDSS
console can be connected to designated digital
telephone circuits, and the HDSS console can only be
connected to designated PEKU circuits. This section
provides instructions on how to install both types of
consoles.
5.5.1 DDSS Console Connections
The DDSS console, which can operate with a digital
telephone (preferably an LCD model), can connect
only to circuit 8 of a PDKU 'digital telephone circuit.
Standard twisted single-pair or two-pair jacketed
telephone cable (maximum 1000 feet, 303 meters) is
used for the connection.
To accommodate the DDSS console connection, the
instrument end of the cable should be terminated in a
modular station connector block (RJ-11). Refer to
Wiring Diagrams, Chapter 7-Wiring Diagrams, for
wiring/interconnecting details, including cable length
limitations (see Table 7-4).
Notes:
1. DDSS console cable runs must not have
the folio wing:
l
Cable splits (single or double)
l
Cable bridges (of any length)
l
High resistance or faulty cable splices
2. See Chapter 7-Wiring Diagrams for
secondary protection information.
CAUTION !
When installing the DDSS cable, do not run
the cables parallel if they are within three feet
of an AC power line. AC power lines should
be crossed at right (90") angles only. In
particular, avoid running station wire pairs
near devices that generate electrical noise,
such as neon or fluorescent light fixtures.
5-l 4
January 1996