7-7
INSTALLATION-TELEPHONE
SECTION 400-096-207
SEPTEMBER 1992
DIU&ADM
DIU&DVSU
HHEU
DVSU
P1
P2
P3
P6
CARBON
EX.SP
HHEU
W203
W201
W202
W204
BEEP
EX.POW
W101
W102
RED
RED
RED
RED
DK24/DK56/DK96
DOES NOT
SUPPORT ADM
FIGURE 7-8
DKT2010-SD, DKT2020-S, AND DKT2020-SD
STRAP AND CONNECTOR LOCATIONS
FIGURE 7-7
DKT2010-H STRAP AND CONNECTOR
LOCATIONS
DIU&ADM
DIU&DVSU
HHEU
DVSU
P1
P2
P3
P
6
CARBON
EX.SP
HHEU
W203
W201
W202
W204
W204
BEEP
HS-BOV
EX.POW
W101
W102
W409
RED
RED
RED
DK24/DK56/DK96
DOES NOT
SUPPORT ADM
4. A Toshiba HESC-65A cable is required to
connect the HHEU in a digital telephone
to the HESB.
5. 1000-series digital telephones cannot be
equipped with the HHEU (any type or
version) and the integrated data interface
unit (PDIU-DI) at the same time, but 2000-
series digital telephones can support an
HHEU and a PDIU-DI2 at the same time.
3.32 HHEU Upgrade Installation (HHEU) Install
the Loud Ringing Bell/headset upgrade (HHEU) in
accordance with the following steps.
1) Loosen the four captive screws securing the
telephone base (Figure 7-1), and remove the
base.
NOTE:
Although Figure 7-1 specifically illustrates
how to remove an electronic telephone base,
it also applies to digital telephones.
2) Using a screwdriver or other suitable tool,
remove the plastic tab located on the back of
the base (Figure 7-1); the HHEU modular
connector for the headset will be accessed
through this opening.
3) If installing a V.3 HHEU1, set the SW601
switch on the HHEU to HEADSET for the
headset or loud bell application (Figure 7-10).
V.4 HHEU1 and HHEU2 do not have this
switch, because both of these upgrades are
automatically set for the headset/loud bell
application.
4) Connect the HESC-65A cable to P601 of the
HHEU (both HHEU1A versions and the
HHEU2 have P601) if the Loud Ringing Bell
option is required (Figure 7-11). Refer to
Section 400-096-208 for HESB installation
procedures.
5A) For the V.3 HHEU1: If only the headset is
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