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MultiVOIP User Guide Technical Configuration
79
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.
Out of Band
Mode
RFC 2833,
SIP Info
RFC2833 method. Uses an RTP
mode defined in RFC 2833 to
transmit the DTMF digits.
SIP Info method. Generates dual
tone multi frequency (DTMF) tones
on the telephony call leg. The SIP
INFO message is sent along the
signaling path of the call.
You must set this parameter per the
capabilities of the remote endpoint
with which the voip will
communicate. The RFC2833
method is the more common of the
two methods.
FAX Parameters
Fax Enable Y/N Enables or disables fax capability for a
particular channel.
Modem
Relay
Enable
Y/N When enabled, modem traffic can be
carried on voip system. When disabled,
modem traffic will bypass the voip
system (Modem Bypass mode).
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.