Polycom spectralink jpi300 User Manual

Site Preparation 

PN: 1725-36122-001_M.doc 

29

When wiring multiple power pairs, use the following table as a guide. 

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. 

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. 

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.