Integrated Data Interface Unit (Pdiu-Di2); Stand-Alone Data Interface Unit (Pdiu-Ds); Door Phone (Mdfb); Figure 16 - Toshiba Strata DK8 General Description Manual

Digital key telephone system
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S T R A T A D K 8 & D K 1 6
G E N E R A L D E S C R I P T I O N
functions. The door phone is often used with a door
lock to screen visitors to a building. Door phones
also can operate as a "hot line" calling link between
an office and a warehouse. The door phone/lock
control unit (DDCB) connects door phones and
door locks to the system. The unit (Figure 19) has
three interfaces, two of which can each support a
door phone and another which can support either a
door phone or a customer-provided door lock. The
DDCB connects only to digital telephone circuits.
Direct Station Selection Consoles—STRATA DK16
only (DDSS and HDSS): Consoles are dedicated
answering stations that are normally used on sys-
tems that receive a heavy volume of incoming calls

Figure 16

INTEGRATED DATA INTERFACE UNIT
(PDIU-DI2)
Figure 18

DOOR PHONE (MDFB)

14
(Figure 20). They operate alongside a digital or
electronic telephone and have 60 buttons which
can be programmed for Direct Station Selection,
central office (CO) lines, All Call Page, Night Trans-
fer, and Speed Dial.
NOTE:
Direct station selection consoles can be con-
nected to STRATA DK16 only. There are two
types: the digital direct station selection console
(DDSS) can only be connected to designated
Base KSU and PDKU digital telephone circuits,
while the electronic direct station selection con-
sole (HDSS) can only be connected to designat-
ed circuits on the PEKU, installed in the Expan-
sion KSU.
Figure 17
STAND-ALONE DATA INTERFACE UNIT
(PDIU-DS)
Figure 19

DOOR PHONE/LOCK CONTROL UNIT (DDCB)

A U G U S T 1 9 9 3

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