Multitech MultiVOIP GSM SIP-to-Cellular Gateways MVPGSM-2 User Manual page 30

Field Name Values
Default --
Select Channel 1-2
Copy Channel --
Voice Gain --
Input Gain +31dB to
–31dB
Output Gain +31dB to
–31dB
DTMF Gain --
DTMF Gain, +3dB to
High Tones -31dB &
"mute"
DTMF Gain, Low +3dB to
Tones -31dB &
"mute"
DTMF Parameters
Duration (DTMF) 60 – 3000
ms
DTMF Out of
In/Out of Band Band, or
Inband
Out of Band RFC 2833,
Mode SIP Info
FAX Parameters – This section is grayed-out as Fax is not supported by the wireless channels
Fax Enable
Modem Relay
Enable
Max Baud Rate
(Fax)
Fax Volume
Jitter Value (Fax)
Mode (Fax)
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Multi-Tech Systems, Inc.
Voice/Fax Parameter Definitions
Description
When this button is clicked, all Voice/FAX parameters are set to their default
values.
Channel to be configured is selected here.
Copies the Voice/FAX attributes of one channel to another channel.
Signal amplification (or attenuation) in dB.
Modifies audio level entering voice channel before it is sent over the IP network to
the remote SIP device. The default & recommended value is 0 dB.
Modifies audio level from IP to the voice channel. The default and recommended
value is 0 dB.
The DTMF Gain (Dual Tone Multi-Frequency) controls the volume level of the DTMF
tones sent out for Touch-Tone dialing.
Default value: -4 dB. Not to be changed except under supervision of Multi-Tech
Technical Support.
Default value: -7 dB. Not to be changed except under supervision of Multi-Tech
Technical Support.
When DTMF: Out of Band is selected, this setting determines how long each DTMF
digit 'sounds' or is held. Default = 100 ms.
When DTMF Out of Band is selected, the MultiVOIP GSM detects and regenerates
DTMF tones. When DTMF Inband is selected, the DTMF digits are passed through
the MultiVOIP GSM unit as they are received.
RFC2833 method. Uses RTP mode defined in RFC 2833 to transmit the DTMF digits.
SIP Info method. Generates 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.
MVPGSM
Chapter 4: Configuring your MVPGSM
30