Draytek VigorBX 2000 Series, Руководство пользователя

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VigorBX 2000 Series User’s Guide 283
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This page allows user to set phone settings.
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Click the number link for Phone port, you can access into the following page for configuring
Phone settings.
Available settings are explained as follows:
Item Description
Hotline Check the box to enable it. Type in the SIP URL in the field
for dialing automatically when you pick up the phone set.
Session Timer Check the box to enable the function. In the limited time
that you set in this field, if there is no response, the
connecting call will be closed automatically.
T.38 Fax Function Check the box to enable T.38 fax function.
Error Correction Mode – Choose a mode for error correction.
Prefer Codec Select one of five codecs as the default for your VoIP calls.
The codec used for each call will be negotiated with the peer
party before each session, and so may not be your default
choice. The default codec is G.729A/B; it occupies little
bandwidth while maintaining good voice quality.
If your upstream speed is only 64Kbps, do not use G.711
codec. It is better for you to have at least 256Kbps upstream
if you would like to use G.711.