Avaya IP Agent Installation And User Manual page 240

Dialog Reference
- Automatic Acoustic Echo Cancellation - This feature is not available in this
release of iClarity.
Half-Duplex Sound Card - Select this option if you have a half-duplex sound card in
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your personal computer. This option button is disabled if the Audio Tuning Wizard
identified a full-duplex sound card in your personal computer. If you are using Avaya IP
Agent in the Road Warrior (VoIP) configuration, it is highly recommended that you use a
full-duplex sound card for maximum audio quality. A list of supported sound cards is
available on the Internet at http://support.avaya.com.
Bandwidth Setting - Select how your personal computer connects to the Avaya
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communication server. Avaya IP Agent uses the bandwidth setting to determine which
codec to use with the Avaya communication server. This field contains the following
options:
- 28800 bps or faster modem - For a 28800 bps or better mode connection, the
G.723 codec may be used. This codec is used for low-speed connections.
- Cable, xDSL or ISDN
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- Local Area Network
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Jitter Buffer - Displays the size of the jitter buffer, which stores packets to ensure a
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consistent delivery of voice to your speakers or headset so that the voice stream you
hear does not contain gaps. The larger the jitter buffer, the longer the delay receiving
audio from the other party. Generally, a maximum of 200 milliseconds is considered
acceptable. Avaya recommends that you use the Automatic setting so that Avaya
iClarity IP Audio changes the setting as necessary. If this setting does not provide
adequate audio quality, contact Avaya technical support for assistance.
! !
Important:
Receive Gain - Use the slider control to set the gain for incoming sound during a call.
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The default value is 1.00.
Transmit Gain - Use the slider control to set the gain for outgoing sound during a call.
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The default value is 0.25.
Audio Receive Clarity - Enter a value to adjust the quality of incoming sound during a
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call. The default value is 1. If you experience popping and clicking noises with the audio
received through Voice-over-IP, you should increase this value. This value can range
240 Avaya IP Agent Installation and User Guide
G.729a - Use this codec for mid-speed connections.
G.723 - Use this codec for low-speed connections.
G.711 u-law (CCITT u-law) - Use this codec for high-speed connections.
G.711 A-law (CCITT A-law) - Use this codec for high-speed connections.
G.729a - Use this codec for mid-speed connections.
G.723 - Use this codec for low-speed connections.
Important: Important:
Do not disable the jitter buffer or set the jitter buffer to none. This will cause
problems for any Voice-over-IP communications.