Telephone Speaker Off-Hook Call Announce Upgrade (Dvsu) - Toshiba Strata DK 280 Installation Manual

5.3.2 Integrated RPCI Data Interface Unit
Programming Overview
Program
39-Assigns the Data Call, Data
Release, and Modem buttons.
Programs 20 and
22-RPCI and data interface unit
assignments.
5.3.3 Telephone Speaker Off-hook Call
Announce Upgrade (DVSU)
To receive Speaker Off-hook Call Announce (OCA)
calls over the digital telephone speaker, a digital
telephone must be upgraded with a DVSU; the
,
telephone making the call does not require a DVSU. In
DK280 release 3 and above, a DVSU is not required
to receive Speaker OCA in the telephone handset or
headset. An additional wire pair is not required for
digital telephones that receive Speaker OCA calls.
The DVSU is compatible with both 2000-series and
1 OOO-series digital telephones.
Notes:
1. Digital telephones cannot be equipped
with a DVSU and integrated data interface
unit (PDIU-DI, RPCI-DI or PDIU-Dl2) at
the same time.
2. To receive Speaker OCA Program 03,
Code 62 or 64 must be set for the PDKU
and Code 28 for the RDSU for telephones
that are to receive Speaker OCA and
Program 31 LED03 must be turned ON for
telephone ports.
3. DVSU is not necessary to receive handset
OCA.
DVSU Upgrade Installation. Install the DVSU upgrade
in accordance with the following steps.
1. Loosen the four captive screws securing the
telephone base (Figure 5-1) and remove the base.
2. Loosen the four captive screws securing the metal
plate to the standoffs inside the base where the
DVSU will be installed (Figure 5-6). Remove the
plate, which can be discarded.
3: Position the DVSU PCB on the standoffs (Figure
5-6), and secure with the four provided screws.
4. If installing the DVSU into a 2000series digital
telephone, refer to Figure 5-7 (DKT2010-H) or
Figure 5-8 (DKT201 O-SD, DKT2020-S, DKT2020-
SD), and then connect the DVSU wire plugs to the
DVSU connectors on the printed circuit board
(PCB) inside the telephone.
-or-
If installing the DVSU into a lOOO-series digital
telephone, refer to Figure 5-9, and connect the
DVSU wire plugs to the DVSU connectors on the
PCBs inside the telephone.
5. Reinstall the telephone base and secure it with its
four captive screws.
Figure 5-6
DVSU Installation for Digital Telephones
5.3.4 Loud Ringing Bell/Headset Upgrade
(HHEU)
The Loud Ringing Bell/Headset upgrade (HHEU)
enables an external speaker (HESB) for the Loud
Ringing Bell feature and/or a headset to be connected
to both series of digital telephones.
Notes:
1. There are two types of HHEU: the HHEUl
(which has four versions, V. 7 - V.4) and
the HHEU2.
2. Both 2000- and 7000-series digital
telephones require either an HHEU2 or a
V.3 or V.4 HHEUI for HESB operation;
earlier HHEU 1 versions are only sufficient
for headset operation only.
5-6
January
1996