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MultiVOIP User Guide Technical Configuration (Analog/BRI)
217
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.
Not supported in 5.02c BRI software.
DTMF In/Out
of Band
Out of
Band, or
Inband
When DTMF Out of Band is selected, 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. In 502c BRI
software, “DTMF Out of Band” can be
checked or unchecked.
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.