Telephone Speaker Off-Hook Call Announce Upgrade (Dvsu) - Toshiba Strara CTX Series Installation And Maintenance Manual

Telephone Speaker Off-hook Call Announce Upgrade (DVSU)

To receive Speaker Off-hook Call Announce (OCA) calls over the digital telephone speaker, a 2000/
2500-series digital telephone must be upgraded with a DVSU; the telephone making the call does not
require a DVSU. Digital telephones do not require an additional wire pair to receive Speaker OCA
call.
BVSU/DVSU Upgrade Installation
See Figures 7-25 and
1. Loosen the four captive screws on the
telephone base and remove the base.
2. For the BVSU only, make sure that the SW1
and SW2 pins are set per
Tables 7-10.
3. Position the BVSU/DVSU PCB on the
standoffs, and secure with the four provided
screws.
4. Connect the BVSU/DVSU wire plugs to the
DVSU connectors on the PCB inside the
phone.
5. Reinstall the telephone base and secure it
with its four captive screws.
BVSU1A
Figure 7-32 Speaker Off-hook Call Announce Upgrade (BVSU1A)
Strata CTX I&M September 2002
7-31 and follow these steps:
Tables 7-9 and
HF U
S P F
Move jumper to
the middle position
(20 Mu) for
DKT2000 phones
6073
T o P C I/V S U
C onnec tors
on T elephone
R ed Wire
Figure 7-31 BVSU/DVSU Installation
20 Mu
S W1
Station Apparatus
F asten
F our
S c rews
6072
7-37