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Chapter 5 - Configuring the Slave MultiVOIPs
7.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.
8.Input gain modifies the level of the audio coming in to the voice channel before it is sent over the Internet to the remote MVP120. 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. The valid range is +31dB to
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.
The DTMF Out of Band check box is selected so the MVP120 will reproduce the DTMF tones rather than passing them through with voice. When this option is checked the DTMF is sent via RTP packets.
Note: Only change the DTMF Gain under direction os
9.To change the voice coder, select the Manual 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.
10.The Fax group enables you to send/receive faxes. You can set the maximum baud rate for faxes and the fax volume in the two lists and change the jitter value in milliseconds.
When receiving fax packets from a remote MVP120, 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 MVP120 uses a Jitter Buffer. The Jitter Value box allows the MVP120 to wait a
If you do not plan to send or receive faxes on a given voice/fax channel, you can disable faxes in the Fax group.
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