Avaya BCM 4.0 Networking Guía de configuración descargar pdf (Pagina 144)

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144 Chapter 8 Configuring telephony resources

N0060606N0060606

1. On the Available list, click the codec you want to add to the Selected list.

2. Click the button to move the codec to the Selected list.

1. Select a codec that you want to remove from the Selected list.

2. Click this button to move the codec back to the Available list.

1. Select a codec on the Selected list.

2. Click the appropriate arrow to move the codec up or down in the Selected list.

Settings

Enable Voice

Activity Detection

<check box> The voice activity detection, also known as silence suppression

identifies periods of silence in a conversation, and stops sending

IP speech packets during those periods. In a typical telephone

conversation, most of the conversation is half-duplex, meaning

that one person is speaking while the other is listening. For more

information refer to “Silence suppression” on page 703.

If voice activity detection is enabled, no voice packets are sent

from the listener end. This greatly reduces bandwidth

requirements.

G.723.1 and G.729 support voice activity detection.

G.711 does not support voice activity detection.

Performance note: Voice activity detection on all networked

BCMs and IPT systems (VAD setting on IPT systems) must be

consistent to ensure that interacting features such as Transfer

and Conference work correctly. As well, the Payload size on the

IPT must be set to 30ms.

Default: Disabled

Jitter buffer Auto

None

Small

Medium

Large

Select the size of jitter buffer you want to allow for your system.

Default: Auto

G.729 payload size

(ms)

10, 20, 30, 40, 50, 60

Default: 30

Set the maximum required payload size, per codec, for the VoIP

calls sent over H.323 trunks.

Note: Payload size can also be set for Nortel IP telephones.

Refer to the BCM 4.0 Telephony Device Installation Guide

(N0027269).

G.723 payload size

(ms)

G.711 payload size

(ms)

10, 20, 30, 40, 50, 60

Default: 30

Incremental payload

size

<check box> When enabled, the system advertises a variable payload size

(40, 30, 20, 10 ms)

Enable T.38 fax <check box> Enabled: The system supports T.38 fax over IP.

Disabled: The system does not support T.38 fax over IP

Table 35 H323 Media parameters record (Sheet 2 of 3)

Field Value Description

1 2 ... 139 140 141 142 143 144 145 146 147 148 149 ... 757 758

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