Draytek Vigor IPPBX 2820n, Руководство пользователя

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VigorIPPBX 2820 Series User’s Guide 80
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Click the number link of Phone port, you can access into the following page for configuring
Phone settings. Below is the sample page for Phone port.
Available settings are explained as follows:
Item Description
Call Feature 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.
Call Waiting - Check this box to invoke this function. A
notice sound will appear to tell the user new phone call is
waiting for your response. Click hook flash to pick up the
waiting phone call.
Call Transfer - Check this box to invoke this function.
Click hook flash to initiate another phone call. When the
phone call connection succeeds, hang up the phone. The
other two sides can communicate, then.
Codecs 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 the 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.