User guide

Chapter 4 - Configuring the Host MultiVOIP

Multi-Tech Systems, Inc. MultiVOIP User Guide

In the Flash Hook Timer box, enter the amount of time the duration of flash hook

signals output on the interface. The default setting is 600 milliseconds.

For FXO-to-FXO communications, you can enable a specific kind of FXO Disconnect:

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 port. For Tone

Detection, select from the drop down list box 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 the 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.

To dedicate the local voice/fax channel to a remote voice/fax channel, (so you will not

have to dial the remote channel) select the Auto Call Enable check box. Enter the

phone number of the remote VOIP in the Phone Number box.

16. The Voice/Fax tab displays the parameters for the voice coder, faxing, and DTMF

gain, DTMF (Dual Tone Multi-Frequency) gain, voice coder, faxing, and advanced

features such as Silence Compression, Echo Cancellation, and Forward Error

Correction.

To change the voice coder, select the new voice coder entry from the Voice 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 get a busy signal.

Note: If Automatic Coder is selected, enter the bandwidth in the Max Bandwidth

box. Check with your Network Administrator to determine available bandwidth.

You can set up the Input Gain and Output 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 MultiVOIP. 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 drop-down lists in the Voice group. The valid

range is +31dB to –31dB with a recommended/default value of 0.

17. The Fax group enables you to select the maximum baud rate for faxes and adjust the

fax volume. If you do not plan to send or receive faxes on a given voice/fax channel,

you can disable faxes in the Fax group.

18. The Miscellaneous group lets you set voice/fax advanced features by clicking

(checking) Silence Compression, Echo Cancellation, or Forward Error

Compression.