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VoIP Parameters
Click the
VoIP Parameters
menu to display the Audio Settings
and RTP Protocol Parameters configuration pages.
Audio Settings
Setting
Description
Preferred Codecs
Lets you arrange the Codec names in
order of preference. The default
sequence is G.711u, iLBC, G.729B,
G.711A.
If your upstream bandwidth is
≤
256
kbps, set your first preference for
G.729B or iLBC. Otherwise, for better
voice quality, use G.711u or G.711A.
Silence Suppression
Enable
Prevents audio frames from being sent
during periods of silence, thus reducing
the network traffic necessary for making
calls. (Note: This feature is useful only
with G.729B.) The default is
Disabled
.
Fax Transmission
Mode
Select the FAX processing method: Off,
μ
Law Passthrough or ALaw
Passthrough. The default is
Off
.
DTMF
Transmission
Method
Select the DTMF processing method:
Off, Audio Passthrough, RTP Out-of-
Band, SIP Out-of-Band. The default is
RTP Out-of-Band
.
Save These Settings
Click to save your changes to flash
memory.
ADSL X6v User Guide
54
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