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FXO
Codec
CAS
FAX
DTMF
Hotline Number to PBX - Pre-set a phone number to make
the port dialing out to PBX automatically.
Manual Disconnection - Click Disconnect to disconnect this
phone line manually.
Preferred Codec - It can be applied on this port. Vigor3300
supports five Codecs. The default setting is G.729A. You can
choose another one as preferred Codec for outgoing calls.
Single Codec - If you checked this box, only preferred codec
will be used for outgoing and incoming calls. And if the
remote end does not support such Codec, the VoIP
communication will be failed.
Codec Rate - Type the rate value to be applied on this port.
Codec VAD- Enable or Disable VAD (Voice Activity
Detection). It can detect whether the voice activity is
progressing or not. If not, RTP packets transmission will be
stopped for saving more bandwidth.
Microphone Gain- The gain value while transmitting voice.
The default value is 0. The range is from -32 to 31.
Speaker Gain - The gain value while receiving voice. The
default value is 0. The range is from -32 to 31.
FAX Mode -The FAX function mode. There are several
options:
Transparent: FAX will be transmitted via voice channel; no
fax relay and no Codec change will be involved. This is the
default value.
T.38 Relay: Using T.38 Fax Relay.
Bypass: Once FAX is detected, the Codec will automatically
switch to a high bit rate type (G.711a/u or G.726) to make
sure FAX can transmit successfully.
If this option is selected, the Vigor3300V+ will apply these
two following settings (FAX Bypass Codec and FAX Bypass
Codec Rate).
FAX Bypass Codec - Select one option to be applied if FAX
mode is configured as Bypass mode.
FAX Bypass Codec Rate - Select one option (20 or 40) to be
applied if FAX mode is configured as Bypass mode. The
stability for the faxing result of documents with codec rate
20ms is higher than 40ms. Yet, the bandwidth request for
40ms is less than 20ms.
DTMF Mode -
InBand: Choose this one then the Vigor will send the DTMF
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Vigor3300V+ Series User's Guide
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