SpectraLink Corporation Installation
Link WTS – Link 3000 MCU
Part Number: 72-0059-01-J.doc Page 22
When wiring multiple power pairs, use the following table as a guide.
Pair Function Pin #s
1 Data 1,2
2 PWR 1 7,8
3 PWR 2 4,5
4 PWR 3 6,3
Power pairs are polarity sensitive; pins 7, 4, and 6 must be the same polarity.
4.6 Prepare Demarc Blocks
Interface Modules are designed to operate with a specific interface to the telephone
system: two-wire digital or analog, or four-wire digital (future release). The number
of demarcation blocks required for the system depends on the number and type of
Interface Modules to be installed.
Interface Type
Interface Module
Part Number
Wire
Pairs
# Blocks
Analog POTS CPA316 1 1
Universal (Comdial, DEFINITY, Meridian 1,
Norstar, Rolm)
CPU316 1 1
Four-wire digital CPF316 2 2
Mitel (DNIC) CPM316 1 1
Panasonic CPP316 1 1
The CPU316 and CPM316 Interface Modules are intended only for
connection to the isolated-side of an on-premise PBX. These interfaces
are intended to connect to digital PBX ports that provide signals of 5Vp-
p (max) AC component and some PBXs providing a 48Vdc offset.
Base Station wiring is the same for all Interface Modules.
Based on the number and type of interfaces in the system, determine the number of
25-pair cables required to connect line ports and Base Stations to the demarcation
blocks. The diagrams which follow provide an overview of the connections.
Multiple Power Pairs
Some sites may prefer to-wire Base Stations to a separate demarc block in order to
split out power pairs.
