MGC Web Server Manager User’s Guide

Table 3-1: Reservation Defaults - Settings1 Parameters (Continued)

Option

Description

 

 

Line Rate (con’t)

Note: The high line rate transmission is enabled

 

with the standard video card (version 1.43 and up)

 

or with the Video+ card. The line rate of incoming

 

ISDN/H.323 calls can be automatically detected

 

and the participant can be connected according to

 

his/her capabilities, without prior setting of the

 

endpoint’s line rate during conference setup. In

 

such a case, the conference Line Rate is the

 

maximum rate for the participant connection. For

 

more details, see MGC Manager User’s Guide

 

Volume II, Chapter 1.

 

 

Audio Alg

Select the preferred audio algorithm. The available

 

audio algorithms are: 8 (G.729/G.723.1), 16

 

(G.728/Siren7), 24 (Siren14/G.722.1/Siren7), 32

 

(Siren14/G.722.1/Siren7), 48 (Siren14/G.722/

 

G.711), 56 (G.722/G.711), or 56 (G.711).

 

Siren 7 and Siren14 are Polycom proprietary audio

 

algorithms. Siren14 can be used only if the MCU is

 

configured to Wideband.

 

To support Siren14, The system must include:

 

The appropriate Polycom settings to support

 

Siren14.

 

An Audio+ card must be installed in the MCU.

 

If the conference is set to Siren14 and the

 

endpoints cannot connect in Siren14, G.722.1 is

 

used instead.

 

The option 8 (G.729/G.723.1) is available only in IP

 

Only (VOIP and video) conferences.

 

In Video Switching conferences, all of the

 

participants must use the same audio algorithm.

 

Participants with endpoints that do not support the

 

algorithm selected for the conference are

 

connected as Secondary (Audio only). If the

 

conference line rate is set to 2B or 128 Kbps, to

 

achieve the best audio and video quality select the

 

appropriate audio algorithm for all the participants

 

in the following order: G.728, G.722, G.711.

 

 

3-7

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Polycom MGC WebCommander Version 9.0 manual Option Description