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MultiVOIP User Guide Technical Configuration (Analog)
182
Voice/Fax Parameter Definitions (cont’d)
Field Name Values Description
DTMF Parameters
Duration
(DTMF)
60 – 3000
ms
When DTMF: Out of Band is
selected, this setting determines
how long each DTMF digit ‘sounds’
or is held. Default = 100 ms.
DTMF
In/Out of
Band
Out of
Band, or
Inband
When DTMF Out of Band is
selected (checked), the MultiVOIP
detects DTMF tones at its input and
regenerates them at its output.
When DTMF Inband is selected,
the DTMF digits are passed through
the MultiVOIP unit as they are
received.
FAX Parameters
Fax Enable Y/N Enables or disables fax capability for a
particular channel.
Max Baud
Rate
(Fax)
2400, 4800,
7200, 9600,
12000,
14400 bps
Set to match baud rate of fax machine
connected to channel (see Fax machine’s
user manual).
Default = 14400 bps.
Fax Volume
(
Default =
-9.5 dB )
-18.5 dB
to –3.5 dB
Controls output level of fax tones. To
be changed only under the direction of
Multi-Tech’s Technical Support.
Jitter Value
(Fax)
Default =
400 ms
Defines the inter-arrival packet
deviation (in milliseconds) for the fax
transmission. A higher value will
increase the delay, allowing a higher
percentage of packets to be
reassembled. A lower value will
decrease the delay allowing fewer
packets to be reassembled.
Mode (Fax) FRF 11;
T.38
(T.38 not
currently
sup-
ported)
FRF11 is frame-relay FAX standard
using these coders: G.711, G.728, G.729,
G.723.1.
T.38 is an ITU-T standard for storing
and forwarding FAXes via email using
X.25 packets. It uses T.30 fax standards
and includes special provisions to
preclude FAX timeouts during IP
transmissions.