Polycom RealPresence RMX 1500 Getting Started Manual page 50

 When the one LAN port RTM ISDN card is installed: Connect the E1/T1 cables to PRI Ports.
Connect the LAN cable to LAN 1.
When LAN redundancy is enabled, LAN 1 is used for both management, media and signaling
network connection.Connect the media and signaling cable to LAN 2 port. By default this port is
used for signaling, but when LAN redundancy is enabled, LAN 2 is the backup of LAN 1 port.
 When the four LAN ports RTM ISDN card is installed:
 Connect the E1/T1 cables to PRI ports.
 In MPMRx card mode, connect the LAN cable to LAN1 and LAN 2.
 In MPMx card mode, connect the LAN cable to LAN 3 and LAN 4.
RealPresence Collaboration Server (RMX) 4000 rear panel with AC powers and communication cables
Polycom, Inc.
Install the RealPresence Collaboration Server (RMX) 4000
50