Draytek Vigor3300 Series, Руководство пользователя, Страница: 137 / 213

Vigor3300 Series User’s Guide
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FAX 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.
T.38 Relay: Using T.38 Fax Relay. This is the default value.
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 Vigor3300 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 DTMF Mode -
InBand : Choose this one then the Vigor will send the DTMF
tone as audio directly when you press the keypad on the phone.
OutBand (RFC2833) : Choose this one then the Vigor will
capture the keypad number you pressed and transform it to
digital form then send to the other side; the receiver will
generate the tone according to the digital form it receive. This
function is very useful when the network traffic congestion
occurs and it still can remain the accuracy of DTMF tone.
SIP INFO: Choose this one then the Vigor will capture the
DTMF tone and transfer it into SIP form. Then it will be sent to
the remote end with SIP message.
DTMF Volume – Determine the volume of DTMF voice signal.
The more the number is set, the greater the sound is.
Call Forwarding Disable - Disable forwarding function.
Call forwarding all calls - Forward all incoming calls to the
specified SIP URL site.
Call forwarding busy - Forward incoming calls to the
specified SIP URL site when this line is busy.
Call forwarding no answer after (Range: 1~10) rings -
Forward incoming calls to the specified SIP URL site after