Multi-Tech Systems MVP120 - Manual (Page 25)

Multi-Tech Systems, Inc. MultiVOIP User Guide
Chapter 4 - Configuring the Master MultiVOIP
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15. The Ring Count FXO box enables you to set the number of rings received on the
FXO interface before hanging up and releasing the line to another call. The default
setting is 2 rings.
Note: Zero (0) means no incoming calls will be answered.
For FXO-to-FXO communications, you can enable a specific kind of FXO
Disconnect Options: Current Loss, Tone Detection, or Silence Detection. Check
with your in-house phone personnel to verify the type of disconnect to use. If current
loss is checked, the VOIP will hang up when it detects a loss of current on the FXO
(phone) port. For tone detection, select from the lists one or two tones that will
cause the line to disconnect. The person hanging up the call must then press the key
or keys that produce those tones to hang up a call. For silence detection, select
One Way or Two Way, then set the timer for the number of seconds of silence before
disconnect. The default value of 15 seconds may be shorter than desired for your
application.
The Message Waiting Light check box must be selected on the originating and
answering voice channel. This enables the number dialed to connect you to the
appropriate voice channel, then output that number on the voice channel.
16. 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.
17. 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 into 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 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
tones are passed via RTP packets, and the receiving VOIP reproduces the DTMF
tones instead of passing them through like voice.
Note: Only change the DTMF gain under the direction of Multi-Tech Technical
Support.
18. To change the voice coder, select the Manual option in the Coder group. Select the
appropriate coder from the Selected Coder list.