Polycom 2000/4000 manual Agc

Polycom RMX 2000/4000 Administrator’s Guide

Table 5-3New Participant – Advanced Properties (Continued)

Field	Description
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 or H.264.
	Select Auto to let the MCU select the video protocol
	according to the endpoint’s capabilities.
Broadcasting	To adjust the volume the participant broadcasts to the
Volume +	conference or the volume the participant hears the
Listening Volume	conference, move the slider; each unit represents an
	increase or decrease of 3 dB (decibel). The volume
	scale is from 1 to 10, where 1 is the weakest and 10
	is the strongest. The default connection value is 5.
Encryption	Select whether the endpoint uses encryption for its
(IP Only)	connection to the conference.
	Auto (default setting) indicates that the endpoint will
	connect according to the conference encryption
	setting.
	Encryption is not supported in ISDN/PSTN calls.
	ISDN/PSTN participants can connect to encrypted
	conferences only if the system flag is set to allow
	non-encrypted participants to connect to encrypted
	conferences.
AGC	AGC (Auto Gain Control) mechanism regulates noise
	and audio volume by keeping the received audio
	signals of all participants balanced. Select this check
	box to enable the AGC mechanism for participants
	with weaker audio signals.
	Note: Enabling AGC may result in amplification of
	background noise.

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