Operation Manual

VigorBX 2000 Series User’s Guide
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FXO (Foreign exchange office) is a port that used to connect to PSTN network. This page is
used to configure settings related to FXP port.
Available settings are explained as follows:
Item Description
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.
Remove Trunk Number Bascially, the number of incoming phone call with trunk
number will be displayed on the phone machine in default.
However, such function can be disabled manually. After
enabling Remove Trunk Number, the number displayed on
the phone machine will be the original phone number
without trunk number.
For example, 902*2281 will be shown on the display panel of
a phone machine if this function is disabled. If it is enabled,
then only 2281 will be shown on the display panel of a phone
machine.
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.
Single Codec – If the box is checked, only the selected Codec
will be applied.