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standard telephone circuits. The KSTU, which can
be installed in the STRATA DK16 Base Key Ser-
vice Unit, has four standard telephone circuits; the
PSTU, which can be installed in the DK16 Expan-
sion Key Service Unit, has eight; and the PESU,
which can also be installed in the DK16 Expansion
Unit, has two (Circuits 1 and 2).
4 TELEPHONE UPGRADES
4.00 Digital and Electronic telephones can be
upgraded for a number of features; there are no
upgrades for standard telephones. Each of these
upgrades shares a circuit with the telephone that it
is connected to and is not considered a station.
4.10 Digital Telephone Upgrades
4.11
Digital telephones can be upgraded with the
following subassemblies:
Integrated Data Interface Unit (PDIU-DI/PDIU-
D12):
A Digital telephone can be upgraded with
a PDIU-DI/PDIU-D12 to provide the telephone
with data switching capabilities. 2000series
Digital Telephones use the PDIU-Dl2, and 1 OOO-
series Digital Telephones use the PDIU-DI.
PDIU-D12 cannot be installed on a telephone if
ADM is installed.
Add-on Module (ADM):
A 2000series Digital
Telephone can be upgraded with an ADM to
provide 20 Direct Station Selection buttons on
STRATA DK16, or 10 DSS buttons, 8 speed dial
buttons, one night transfer button and one all
call page button on STRATA DK8. The IOOO-
series Digital Telephone models cannot support
ADMs. ADM cannot be installed on a telephone
if PDIU-D12 is installed.
Off-hook Call Announce Upgrade (DVSU):
A
Digital telephone that must receive Off-hook
Call Announce must be upgraded with a DVSU.
Loud Ringing Bell/Headset Upgrade(HHEU):
A digital telephone can be upgraded with an
HHEU to provide a dual interface for the Loud
Ringing Bell feature and/or a headset. (Simul-
taneously with PDIU-D12 or ADM).
4.20 Electronic Telephone Upgrades
4.21 On STRATA DK16, electronic telephones
can be upgraded with the following subassem-
blies:
INSTALLATION-CONFIGURATION
SECTION 100-816-203
MARCH 1993
l
Off-hook Call Announce Upgrade (HVSUS or
HVSWHVSI):
An electronic telephone must be
upgraded with the HVSU2 subassembly or the
combined HVSWHVSI subassemblies to re-
ceive Off-hook Call Announce.
NOTE:
A PEKU or PEW PCB that supports elec-
tronic telephones that must receive Off-hook
Call Announce must be equipped with an
EOCU.
l
Loud Ringing Bell/Headset Upgrade(HHEU):
An electronic telephone can be upgraded with
an HHEU to provide a dual interface for the Loud
Ringing Bell feature and a headset simulta-
neously.
5 CONFIGURATION EXAMPLES
5.00 The following provides an examples of how to
configure a STRATA DK8.
5.10 Strata DK8 - Example 1 (Small1 Retail
Store)
5.11 Customer Requirements.
Astore needs two
CO lines and four digital telephones.
5.12 Analysis.
The store’s system hardware re-
quirements are as follows:
l
Two CO line circuits for the CO lines.
l
Four digital telephone circuits for the digital
telephones.
5.13 Conclusion.
A standard Key Service Unit
would be adequate in this case. The unit’s stan-
dard four digital telephone circuits and two CO line
circuits could easily accommodate the store’s needs
and allow for future expansion.
5.20 Strata DK8 - Example 2 (Home/Office)
5.21 Customer Requirements.
In addition to three
CO lines, a home/office needs five digital tele-
phones (three of which will have PDIU-Dls), a
modem, a door phone, one facsimilie machine,
Music-on-hold and Telephone Set Background
Music.
5.22 Analysis.
The customer’s requirements could
be broken down as follows:
3-9