Multi-Tech mvp110 User Guide
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Chapter 3 - Software Loading and Configuration
15. The Voice/Fax tab displays the parameters for the voice gain, DTMF (Dual Tone Multi-
Frequency) gain, voice coder, faxing, and advanced features such as Silence Compression,
Echo Cancellation, and Forward Error Correction.
Echo Cancellation, and Forward Error Correction.
16. You can set up the input and output voice gain so that the volume can be increased or
decreased. Input gain modifies the level of the audio coming in to the voice channel before it is
sent over the Internet to the remote MVP110. Output gain modifies the level of the audio being
output to the device attached to the voice channel. Make your selections from the Input and
Output lists in the Voice Gain group. The valid range is +31dB to –31dB with a recommended/
default value of 0.
sent over the Internet to the remote MVP110. Output gain modifies the level of the audio being
output to the device attached to the voice channel. Make your selections from the Input and
Output lists in the Voice Gain group. The valid range is +31dB to –31dB with a recommended/
default value of 0.
You can also set up the DTMF gain (or output level in decibels - dB) for the higher and lower
frequency groups of the DTMF tone pair. Make your selections in the lists in the DTMF Gain
group. When the DTMF Out of Band check box is selected, the unit reproduces the DTMF tones
instead of passing them through.
frequency groups of the DTMF tone pair. Make your selections in the lists in the DTMF Gain
group. When the DTMF Out of Band check box is selected, the unit reproduces the DTMF tones
instead of passing them through.
Note: Only change the DTMF gain under the direction of Multi-Tech Technical Support.
17. To change the voice coder, select the Manual option in the Coder group. Select the appropriate
coder from the Selected Coder list.
If you changed the voice coder, ensure that the same voice coder is used on the voice/fax
channel you are calling. Otherwise, you will always get a busy signal.
channel you are calling. Otherwise, you will always get a busy signal.
Note: If you allow the Coder to be selected automatically, then you need to select the Max
Bandwidth from the list. Check with your Network Administrator to determine how much
bandwidth is available.
Bandwidth from the list. Check with your Network Administrator to determine how much
bandwidth is available.
18. The Fax group enables you to send/receive faxes on the selected voice/fax channel. You can set
the maximum baud rate for faxes, the fax volume, and change the jitter value in milliseconds.
When receiving fax packets from a remote MVP110, it is possible for individual packets to be
delayed or received out of order due to traffic conditions on the network. To compensate for this
effect, the MVP110 uses a Jitter Buffer. The Jitter Value box allows the MVP110 to wait a user-
definable period of time, in milliseconds, for delayed or out of order fax packets. The range of
allowable Jitter Values is 0 to 400 with a default of 400 milliseconds.
delayed or received out of order due to traffic conditions on the network. To compensate for this
effect, the MVP110 uses a Jitter Buffer. The Jitter Value box allows the MVP110 to wait a user-
definable period of time, in milliseconds, for delayed or out of order fax packets. The range of
allowable Jitter Values is 0 to 400 with a default of 400 milliseconds.
If you do not plan to send or receive faxes on a given voice/fax channel, you can disable faxes in
the Fax group.
the Fax group.
19. You can enable the voice/fax advanced features by selecting the Silence Compression, Echo
Cancellation, or Forward Error Correction options.
The Silence Compression option defines whether silence compression is enabled for the voice
channel. If Silence Compression is enabled, the MVP110 will not transmit voice packets when
channel. If Silence Compression is enabled, the MVP110 will not transmit voice packets when