Polycom realpresence 1800 Administrator's Manual page 548

RealPresence Collaboration Server (RMX) 4000:
Although the RTM LAN (media card) ports are shown as Port 1 in the Ethernet Settings and
Hardware Monitor, the physical LAN connection is Port 2.
2 Select the speed and transmit/receive mode for each ports as follows:
Ethernet Settings Parameters
Field
Speed
Polycom, Inc.
Description
The Collaboration Server 1800 has 2 LAN ports that can be configured.
The Collaboration Server 2000/4000 has 3 LAN ports on the RTM-IP (Management,
Signaling and Shelf Management), and additional LAN ports on each media card (RTM
LAN) and RTM ISDN cards. You can set the speed and transmit/receive mode
manually for these ports.
Port The LAN port number.
Note: Do not change the automatic setting of Port 1,4 and Port 5 of
the Management 2 and Signaling 2 Networks. Any change to the
speed of these ports will not be applied.
Speed Select the speed and transmit/receive mode for each port.
Default: Auto – Negotiation of speed and transmit/receive mode starts
at 1000 Mbits/second Full Duplex, proceeding downward to
10 Mbits/second Half Duplex.
Notes:
To maximize conferencing performance, especially in high bit rate call
environments, a 1Gb connection is recommended.
• RealPresence Collaboration Server (RMX) 4000 - Do not select
1000 Full Duplex for any LAN ports in Slot 17.
Select only 100 Full Duplex.
IP Network Services
517