Vigor3300 Series User’s Guide
185
Codec: Setup the voice compression mode and transfer rate, etc.
Preferred Codec: Preferred voice compression mode. It will affect the voice
quality and the transferred data size. By default is G.729A – 8kbps.
Codec Rate: Transfer rate of the voice packets. By default is 20ms.
Codec VAD: This feature can reduce the number of transmitted bits and packets during
silence periods. But it may slightly affect the voice quality. By default is Disable.
CAS: Adjust the volume of the conversation.
RX Gain: The default value is 0.
TX Gain: The default value is 0.
FAX: Relevant settings used for FAX over VoIP.
FAX Mode: Compression mode used for transferring FAX. By default is T.38 Relay.
FAX Bypass Codec: Select the compression mode when FAX Mode selects Bypass.
FAX Bypass Codec Rate: Select the transfer rate of voice packets when FAX Mode
selects Bypass.
DTMF: DTMF are the audible sounds you hear when you press keys on your phone.
DTMF Relay: By default is RFC2833.
After configuration, click Apply to save the settings. Router will auto jump to the VoIP -
Port Settings page.
