Toshiba STRATA DK24 Manual page 99

INSTALLATION-CONFIGURATION
SECTION 200-096-204
FEBRUARY1991
telephones). Each DDSS console does not require
a specialized interface PCB; instead, each DDSS
console takes the place of one digital telephone on
a PDKU PCB. However, only one DDSS console
may be interfaced to a PDKU, and it must interface
to circuit 8. Likewise, each DSS console does not
require a specialized interface PCB; instead, each
DSS console takes the place of two electronic
telephones on a PEKU PCB. However, only one
DSS console may be interfaced to a PEKU, and it
must interface to circuits 7 and 8. Table 4-E pro-
vides more details regarding DDSS and DSS con-
soles.
Example
4-An end user requires nine CO lines,
15 electronic telephones, one DSS console and
external paging.
l
If external paging speakers can be driven
with 3 watts or less, then the PEPU PCB can
be employed as the paging amplifier. Since
each DSS console requires the equivalent of
two electronic telephones for interface, a
total of 17 equivalent electronic telephones
must be interfaced and, therefore, three
PEKU PCBs are needed. Aside from com-
mon equipment, the PCBs required for this
configuration are as follows:
Three PCOU PCBs
Three PEKU PCBs
One PEPU PCB
l
A total of seven universal slots are needed
(which is within the maximum of DK56's eight
universal slots).
Example
5-A mid-sized business needs 15 CO
1 lines, 12 digital telephones, two DDSS consoles,
14 electronic telephones, two DSS consoles,
external paging system interface to drive an
existing 8-ohm speaker, and SMDR.
l
Because SMDR is a requirement, the PIOU
amplified page output and SMDR interface
will be needed. This unit can also handle the
external paging system interface require-
ment. Two DDSS consoles require the
equivalent of two digital telephone circuits in
addition to the 12 digital telephones, for a
total of 14 digital telephone circuits; this
results in the installation of two PDKU PCBs.
Two DSS consoles require the equivalent of
four electronic telephones, for a total of 18
electronic telephone circuits; this results in
the installation of three PEKU PCBs. The -
final PCB configuration (in addition to corn- .j
mon equipment) is:
Four PCOU PCBs
Three PEKU PCBs
Two PDKU PCBs
I
One PIOU PCB
l
The total universal slots needed equals 10,
so that a DK96 would be sold to this busi-
ness.
2.20 Data Interface Units (PDIU-DI and PDIU-DS)
2.21 Integrated Data Interface Unit (PDIU-DI):
Digital telephones may be equipped with a PDIU-
DI. The PDIU-DI is not astand-alone unit, and must
be attached to a digital telephone. Each system can
support amaximum numberof PDIU-Dls, asshown
in Table 4-B. The PDIU-DI and the digital telephone
it is integrated into share the same circuit on the
PDKU PCB.
2.22 Stand-alone Data Interface Unit (PDIU-DS):
Each PDIU-DS requires one circuit on a PDKU
PCB. A PDIU-DS can be connected to any circuit
on a PDKU, and as many as eight can be con-
nected to a PDKU. Unlike the PDIU-DI, the PDIU-
DS does not share a circuit with a digital telephone.
Therefore, each PDIU-DS reduces the digital tele-
phone maximum capacity by one. Each system can
suppot-tamaximumnumberofPDIU-DSs,asshown
in Table 4-B.
NOTE:
1. The PDIU-DI and PDIU-DS will function
with all slots, except slots 11 - 14 in DK96.
2. PDKU circuits 1 - 7 can support PDIU-Dls
and PDIU-DSs.
Example
6-A small law firm requires three CO
lines, IO digital telephones (all of which will be
equipped with a PDIU-DI connected to a per-
sonal computer) and two PDIU-DSs connected
to modems.
l
The telephones will require IO PDKU circuits
and the modem/PDIU-DSs two more. The
PDIU-Dls do not require a dedicated circuit,
because they share one with the digital tele-
phones to which they are connected. A total
of 12 digital circuits are required for this
configuration; therefore, two PDKUs would
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