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INSTALLATION-SYSTEM DESCRIPTION
SECTION 200-096-202
FEBRUARY1991
HHEU (Loud Ringing Bell/Headset Upgrade):
Each electronic telephone may also be upgraded
to provide a loud ringing bell interface and a
modular headset jack by installing a loud ringing
bell/headset upgrade assembly (Figure 2-l 6).
The assembly consists of a small PCB (HHEU)
which installs on the main PCB, inside the tele-
phone, with a plug-in connector (HESC-65).
l
An external speaker/amplifier is directly con-
nected to the upgraded phone. When the
phone rings, the speaker sounds a loud tone
that mimics the phone’s ring. See the HESB
(external speaker) option.
l
Most standard headsets are compatible with
the HHEU jack.
NOTE:
It is recommended not to equip the OCA
feature when using an HHEU feature be-
cause all voice paths are switched over the
electronic telephone speaker during an OCA
call.
8.20 Direct Station Selection Console
8.21 The Direct Station Selection (DSS) console
is an optional dedicated answering station. It is
normally used on systems with a heavy volume of
incoming calls. However, a DSS console may be
used with one of four designated electronic tele-
phones. Both DK56 and DK96 models can support
up to four DSS consoles. DK24 can also support
up to four DSS consoles, if its controller PCB is the
PCTU; however, a DK24 with a PCTUSI PCB can
only support up to three DSS consoles. For more
information on DSS console features, see the
General Description.
8.22 A DSS console must be assigned to a par-
ticular station when the system configuration is
defined in programming. All four DSS consoles
can be assigned to asingle station, orfourdifferent
DSS consoles may be assigned to four different
stations (or any intermediate combination). The
same DSS console may not be assigned to more
than one station.
NOTE:
I
8.23 Each DSS console requires two station ports One door lock control is supported by any of
(circuits 7 and 8) on an electronic telephone Inter-
the Option Interface PCBs (PIOU, or PIOUS,
FlGURE2-16-HHEU
face PCB (PEKU). Only one DSS console may be
installed on a particular PEKU. DSS consoles can
not be installed on PESU electronic telephone
circuits 7 and 8.
8.30 Toshiba-supplied Peripherals
8.31 This section describes each peripheral item
manufactured by Toshiba for use with the STRATA
DK systems. Configuration and connection con-
siderations are noted where applicable.
8.32 Door Phone.
Up to 12 door phones may be
installed on any STRATA DK system. Five of the
door phones may be associated with the door lock.
When used in this manner, the door phone is
mounted outside a building, next to a locked door
whose entry requires screening. A door phone can
also function as a sound monitor-any electronic
telephone can call the door phone’s station num-
ber and listen to sounds within its immediate area.
Up to three door phones or two door phones and
one door lock can be connected to each HDCB
door phone control unit (Figure 2-17). See the
General Description for more details.
8.33 Door Lock Control.
The door lock control
allows a user to momentarily (three or six seconds)
open an electronic door lock bv pressing a button
(m) on an electronic telephone.
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