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INSTALLATION-CONFIGURATION
SECTION lOO-816-203
MARCH1993
DK16 WORKSHEET 2, KEY SERVICE UNIT AND PCBs
1. From Worksheet 1 enter the number of required ports (circuits) and lines.
Digital Ports:
Electronic Ports:
Standard Ports:
CO Lines:
NOTE: The maximum number of combined digital, electronic, and standard ports
is 20. The maximum number of CO lines is eight.
2. Cross off the printed circuit boards (PCBs)-in addition to the standard Base Key Service Unit lines and
ports- needed to support the ports and lines entered in Step 1 of this worksheet.
Base Unit Interfaces/PCBs
Base Unit (4 CO lines, 8 digital ports):
X
built-in
KSTU (4 standard ports): one max.
Expansion Unit Station and line PCBs
KCDU (2 CO lines and
4 digital ports):
-or-
PDKU (8 digital ports):
- or -
two max.
one max.
(KCDU cannot be installed
with any other type of
station PCB or PCOU PCB)
PEKU (8 electronic ports):
- or -
PSTU (8 standard ports):
- or -
PESU (2 standard ports and
(4 electronic ports):
one max.
one max.
one max.
PCOU (4 CO lines):
one max. (PCOU can be installed with
PDKU, PEKU, PESU, or
PSTU, but not with KCDU)
NOTES:
1. The Base Unit by can only support up to 12 stations (8 digital and 4 standard)
and four CO lines.
2. The Expansion Unit can support up to eight stations and four CO lines.
3. If installing two DDCBs, a PDKU or a KCDU is required to support the second
DDCB-no matter what the total number of digital ports.
4. If installing two DDSS Consoles, a PDKU is required to support the second
DDSS Console-no matter the total number of digital ports. (KCDU does not
support DDSS.)
3. Refer to Worksheet 3 to determine option and peripheral requirements.
4. Refer to Worksheet 4 to determine the amount of power used by the system.
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