Dialogic 4000 SERIES Manual do Utilizador descarregar pdf (Página 58)

Dialogic

4000 Media Gateway Series Reference Guide

Page 58

Codec Profiles

To configure a codec profile, click the Add button. To change the settings, click the Details button on the right

hand side. If you create a codec profile, make sure to select it in the SIP Peers section, under Enhanced. To

open the online help for a specific parameter, click the parameter, and a window with the help text will appear.

You can configure the following parameters when you create or modify a codec profile:

Name: Enter a name to easily identify the codec profile You can select the codec profile in the SIP Peers

section.

Available

Codecs:

This list includes all available codecs. If you want to use a certain codec, select it and click Use Codec.

The codec will be moved to the Selected Codecs list. The G.729 codec can only be used after you

have purchased and activated a license. See License Activation

on page 13 for more information.

Selected

Codecs:

By default, the G.711 A-law and G.711 µ-law codecs are selected. If you want to delete a certain codec,

select it and click Remove Codec. The codecs are used according to their position in the list, with the

first codec being the first to be used. To change the order, use the Up and Down buttons.

Packet interval

default:

Interval between RTP packets in an RTP stream. Also known as packetization time or RTP frame size.

Voice activity

detection:

If you activate voice activity detection, silence during a conversation is detected, and the data rate is

reduced.

Comfort Noise

Generation:

If you enable this parameter, packets with low artificial background noise are sent to fill periods where

no data packets are received from the SIP peer. This helps prevent the other party from thinking the

transmission has been lost (because of the silence) and hanging up prematurely.

Note: Support for this feature depends on the type of Diva Media Board present in the system. If the

hardware does not support this feature, the setting is ignored.

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Dialogic 4000 SERIES Manual do Utilizador Página 58