Polycom spectralink jpi300 User Manual

Page of 68
System Installation 
PN: 1725-36122-001_M.doc 
47
Connect the Intershelf Junction Panel 
The Intershelf Junction Panel  converts the RJ-21 connections on the 
system controller to the RJ-45 connections on the expansion shelf 
controller. 
 
Intershelf Junction Panel (JPI300) 
To connect the Intershelf Junction Panel: 
1.  Connect a five-foot RJ-21 cable from the CSC306 or CSC320 
System Controller Card to the corresponding connection on the 
JPI300. 
2.  Connect two 12-foot RJ-45 cables from the Expansion Shelf 
Controllers (CSC300) to the corresponding shelf on the JPI300. Be 
sure the RJ-45 cable in Connector 
A
 on the Shelf Controller goes to 
the 
A
 Connector on the JPI300, and that Connector 
B
 goes to the 
B
 
Connector.