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INSTALLATION-CONFIGURATION
SECTION 100-816-203
MARCH 1993
3-16
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): _____ two max. (KCDU cannot be installed
with any other type of
- or - station PCB or PCOU PCB)
PDKU (8 digital ports): _____ one max.
- or -
PEKU (8 electronic ports): _____ one max.
- or -
PSTU (8 standard ports): _____ one max.
- or -
PESU (2 standard ports and
(4 electronic ports): _____ 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.