Dk16 Expansion Key Service Unit Pcbs - Toshiba Strata DK 16 Installation And Maintenance Manual

PCB Circuits per PCB
8 digital telephone
PDKU
circuits
PEKU 8 electronic telephone
circuits
8 standard telephone
PSTU
circuits
2 standard telephone/
PESU
4 electronic telephone circuits
(standard/electronic
telephone ports)
PCOU
4 CO line circuits
(lines)
KCDU 2 CO line circuits/
4 digital telephone circuits
See Table 3-D
PIOU,
PIOUS
3 STATION CONSIDERATIONS
3.00 For configuration purposes, a station can be
considered as any device which is connected to a
dedicated telephone circuit. Although the words
"telephone" and "station" are often used synony-
mously and interchangeably in STRATA DK8/
DK16 documentation, devices other than tele-
phones—such as Stand-alone Data Interface units
(PDIU-DSs)—should also be considered as sta-
tions when configuring a system, because they
require a dedicated telephone circuit. A station
apparatus overview is shown in Table 3-G (for
STRATA DK8) and Table 3-H (for STRATA DK16).
TABLE 3-E

DK16 EXPANSION KEY SERVICE UNIT PCBs

• Digital telephones with or
without PDIU-DI2 or ADM
• DDSS console
• PDIU-DSs
• DDCB
• Electronic telephones
• HDSS console
• BGM source
• EOCU PCB for OCA
• Standard telephones
• Voice mail ports
• Background music source
• Off-premises stations
• Other similar devices
Standard: same as PSTU
Electronic: same as PEKU
except PESU does not
support HDSS console
• Central Office loop start
lines
• Central Office loop
start lines
• DKT circuits same as
PDKU, except no DDSS
See Table 3-D
3-5
INSTALLATION-CONFIGURATION
Interfaces
RJ14C Modular
(CO Line circuits)
25-pair amphenol
(digital telephone circuits)
25-pair amphenol (PIOU)
Spring clip terminal (PIOUS)
3.10 Telephone Circuit (Port) Types
3.11 There are three types of telephone circuits to
which stations can be connected: digital telephone
circuits, electronic telephone circuits, and stan-
dard telephone circuits. All three types of circuits
are available with the STRATA DK16. The STRATA
DK8 does not support electronic telephone cir-
cuits.
3.20 Digital Telephone Circuit Connections
3.21 The STRATA DK8 Key Service Unit provides
four digital telephone circuits. The QCDU PCB
provides two.
SECTION 100-816-203
MARCH 1993
Connector
25-pair amphenol
25-pair amphenol
25-pair amphenol
25-pair amphenol
RJ14C modular