Polycom DOC2066F manual Auto Gain Control AGC mechanism regulates

MGC Manager User’s Guide - VoicePlus Edition

Table 2-13: H.323 and SIP Participant Properties - Advanced (Continued)

Field/Option	Description
AGC	The Auto Gain Control (AGC) mechanism regulates
	audio noise and volume by balancing the received
	signal to all participants. AGC can be applied to all
	incoming audio streams prior to mixing, thereby
	dynamically adjusting the amplification of the input
	signal.
	AGC is automatically enabled for all participants.
	Clear this check box to disable this option for the
	participant.
Encryption	Media information can be encrypted using an AES
	128 algorithm. The Encryption options are affected
	by the settings of the participant level flag in the
	system.cfg. Select the appropriate encryption setting
	for the participant:
	• Auto – The conference encryption setting
	(encrypted/non-encrypted) is applied to the
	participant. In this mode, the participant connects
	as encrypted only if the conference is defined as
	encrypted.
	• Off – The participant joins the Conference/Entry
	Queue non-encrypted.
	• On – The participant joins the Conference/Entry
	Queue encrypted.
	Note: SIP participants do not support this type of
	encryption, and therefore Auto should be selected.
	For more details, about encryption see the MGC
	Manager User’s Guide Volume II, Chapter 1.
Node Type	Select the node type from the list:
	• Terminal – The default. This setting is applicable
	for all settings that are not DTMF enabled
	cascaded conferences.
	• MCU – Select this setting for a dial-out participant
	in a DTMF enabled cascaded conference. For
	more details, see MGC Manager User’s Guide
	Volume II, Chapter 1.

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