Multi-Tech Systems MVPFX2-2 - Manual (Page 71)

MultiVOIP FX User Guide Technical Configuration
71
Voice/Fax Parameter Definitions (cont’d)
Coder Parameters
Coder Manual or
Auto-
matic
Determines whether selection of
coder is manual or automatic.
When Automatic is selected, the
local and remote voice channels will
negotiate the voice coder to be used
by selecting the highest bandwidth
coder supported by both sides
without exceeding the Max
Bandwidth setting. G.723, G.729, or
G.711 are negotiated.
Selected
Coder
G.711 a/u
law 64
kbps;
G.726, @
32 kbps;
G.723.1 @
6.3 kbps;
G.729,
8kbps;
Select from a range of coders with
specific bandwidths. The higher the
bps rate, the more bandwidth is
used. The channel that you are
calling must have the same voice
coder selected.
Default = G.723.1 @ 6.3 kbps. Here
64K of digital voice are compressed
to 6.3K, allowing several
simultaneous conversations over
the same bandwidth that would
otherwise carry only one.
To make selections from the
Selected Coder drop-down list, the
Manual option must be enabled.
Max
bandwidth
(coder)
11 – 128
kbps
This field lets you specify the
maximum bandwidth allowed for
this channel.
If coder is to be selected
automatically (“Auto” setting), then
enter a value for maximum
bandwidth.