Chapter 3 - Setting Defaults

Table 3-4: Participant Defaults - Settings2 parameters (Continued)

Option

Description

 

 

Enhanced Video

The MGC Manager can provide high quality video

 

(30 frames per second for incoming and outgoing

 

video streams) for line rates up to T1/ E1 in

 

Transcoding and Continuous Presence

 

conferences. This is done by allocating two video

 

codecs to the participant instead of one. One of

 

the video codecs is used for encoding, while the

 

other is used for decoding the incoming video

 

stream.

 

Select this check box to enable the high quality

 

video feature for the participant.

 

Note:

 

To work with 30 frames per second the High

 

Frame Rate flag in the system.cfg must be

 

enabled.

 

To work with bit rates higher than 768 Kbps,

 

the High Bit Rate flag in the system.cfg must

 

be enabled.

 

 

AGC

The Auto Gain Control (AGC) is the system

 

default.

 

Clear this check box to disable the Auto Gain

 

Control (AGC) for the participant.

 

The Auto Gain Control mechanism regulates

 

noise and audio volume by keeping the received

 

signal to all participants balanced. Different

 

endpoints and phones produce different types of

 

source noise and volume. The Auto Gain Control

 

mechanism can be applied to all incoming audio

 

streams prior to mixing, thereby dynamically

 

changing the amplification of the input signal

 

providing a constant output amplitude.

 

 

3-44

Page 72
Image 72
Polycom MGC WebCommander Version 9.0 manual Agc