Dialogic 4000 Series SU4.1 Instrukcja Użytkownika Pobierz pdf (Strona 79)

Dialogic® Diva® SIPcontrol™ Configuration

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 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.

Support

comfort

noise

payload:

If you enable this parameter and VAD is configured for the codec used for

the call, periods of silence will be replaced by sending a special "comfort

noise" signal to the SIP peer. This allows a supporting SIP device to

generate appropriate artificial background noise in order to remove the

impression of the call being interrupted.

If the SIP peer does not support this type of event, this setting has no

effect.

Noise

suppressor:

Enable this parameter if you want to use the noise suppressor

functionality.

Echo

canceller:

If you enable this parameter, the audio echo canceller is active for calls to

or from the PSTN.

Transmit as

RTP event:

This option enables DTMF and fax tones to be sent and received as RTP

events instead of audio signals.

Automatic

payload

type:

G.726, iLBC, RT Audio, and DTMF have a dynamic RTP payload. If you

enable this option, Diva SIPcontrol sets the values automatically. If the

endpoint cannot handle the automatically set value, enter it manually

under Manual payload type value.

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