User's Manual
Polycom® RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator’s Guide
8-12 Polycom, Inc.
4 Usually, additional definitions are not required and you can use the system defaults for 
the remaining parameters. In such a case, click OK. 
To modify the default settings for advanced parameters, click the Advanced tab.
5 Define the following Advanced parameters:
Extension/Identifier 
String (continued)
The Collaboration Server automatically sends this information upon 
connection to the destination device/conference. The information is 
sent by the Collaboration Server as DTMF code to the destination 
device/conference, simulating the standard IVR procedure.
Table 8-3 New Participant – General Properties (Continued)
Field Description
IP Participant
ISDN/PSTN 
Participant
Table 8-4 New Participant – Advanced Properties
Field Description
Video Bit Rate / Auto
(IP Only)
The Auto check box is automatically selected to use the Line Rate 
defined for the conference.
Note: This check box cannot be cleared when defining a new 
participant during an ongoing conference.
To specify the video rate for the endpoint, clear this check box and 
then select the required video rate.
Video Protocol Select the video compression standard that will be forced by the MCU 
on the endpoint when connecting to the conference: H.261, H.263, 
H.264 or RTV.
Select Auto to let the MCU select the video protocol according to the 
endpoint’s capabilities.










