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INSTALLATION-TELEPHONE
SECTION 200-096-207
FEBRUARY1991
1) Remove the screw from the bottom of the
cover. Detach the cover from the base and
metal frame.
2) Position the metal frame and base to the
mounting surface and secure with two 1 -inch
pan head wood screws.
3) Attach cover to the metal frame and base.
4 DIGITAL TELEPHONE
UPGRADE OPTIONS
4.00 The following contains digital telephone in-
stallation instructions. It includes step-by-step di-
rections and drawings on how to upgrade digital
telephones to transmit and receive simultaneous
voice and data calls. Instructions are also provided
for the loud ringing bell/headset and off-hook call
announce upgrades.
4.01 Simultaneous Voice and Data (Integrated
Datalnterface Unit: PDIU-DI) Upgrade.
PDIU-DI-
equipped digital telephones can transmit and re-
ceive simultaneous voice and data calls made
independently of each other. Asynchronous de-
vices, such as personal computers and terminals,
can be connected to the standard RS-232 connec-
tor of the PDIU-DI. Station users are able to
transmit and receive RS-232 data over the PDIU-
DI equipped telephone’s single twisted wire pair.
4.02 Data calls can be manually dialed with a
m button and disconnected with am but-
ton (see
Program
39); or, if the PDIU-DI equipped
digital telephone is connected to a personal com-
puter or ASCII terminal, standard “AT” dialing
commands may be dialed from the terminal’s or
computer’s keyboard to place data or voice calls.
PDIU-DI equipped digital telephones may also be
assigned a m button
(see Program 39)
to
reserve a modem or monitor modem availability
and status.
NOTES:
I. If the digital telephone is equipped with a
PDIU-DI, it cannot be wall-mounted or
upgraded for loud ringing bell/headset or
off-hook call announce.
2. The PDIU-DI will function in all systems,
except for slots 7 I - 14 in DK96..
3. The PDIU-DI can be connected to any digital
telephone connected to PDKU circuits 1 w 7.
4.03 Loud Ringing Bell/Headset.
The loud ring-
ing bell/headset upgrade (HHEU) enables an
external speaker (HESB) and/or a headset to be
connected to the digital telephone. In this configu-
ration, the HESB serves as a loud ringing bell.
NOTE:
A Toshiba HESC-65A cable is required to
connect the HHEU in a digital telephone to
the HESB. The HHEU must be version V3.0
or later for HESB operation (not required for
headset operation).
4.04 Off-hook Call Announce (DVSU).
The off-
hookcall announce (OCA) upgrade allows a digital
telephone to receive calls when the handset is off-
hook. To receive OCA calls, a digital telephone
must be upgraded with a DVSU; the telephone
making the call does not require a DVSU. (The
DVSU’s function in the digital telephone is the
same as the HVSU/HVSI assembly’s function in
the electronic telephone.) An additional wire pair is
not required for digital telephones that receive
OCA calls.
NOTE:
The HHEU must be version V3.0 or later for
digital telephones supporting both the loud
ringing bell/ headset and OCA upgrades.
4.10 Digital Telephone Upgrade Installation
4.11 PDIU-DI Installation.
Install the PDIU-DI in
accordance with the following steps:
1) Loosen the four captive screws securing the
digital telephone base, and remove it.
2) Refer to Figure 7-9, and insert the two PDIU-
DI wire connectors into the digital telephone’s
bottom PCB, observing the red wire for cor-
rect positioning.
3) On the digital telephone cut the DIU strap:
W302 on DKT 1020H or
-W401
on DKT
1020SD (see Figure 7-9).
7-7