User guide

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Chapter 7 - Using the MultiVOIP Software
Multi-Tech Systems, Inc. MultiVOIP User Guide
The Auto Call option allows the local MultiVOIP to call a remote MultiVOIP without the user
having to dial a Phone Directory Database number. As soon as you access the local
MultiVOIP voice/fax channel, the MultiVOIP immediately connects to the remote MultiVOIP that
you identified in the Remote MultiVOIP Phone Number box of this option.
Check with your in-house telephone personnel to verify whether your local PBX dial signalling
is Pulse or DTMF (tone). Select the regeneration option accordingly.
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 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. 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.
The Voice/Fax tab displays the parameters for the voice coder, faxing, and DTMF gain.
The FXO Options group controls how the selected channel interacts with answering
machines. If the Current Loss check box is selected, the local MultiVOIP interrupts power
from the Phone port when a call is hung up on the remote end. The remote MultiVOIPs must
also be configured for current loss.
Voice/Fax Tab
The Voice/Fax tab controls the Voice Coder, Input and Output gains, Fax settings, DTMF gain,
and some miscellaneous options.
The MultiVOIP supports many state-of-the-art ITU (International Telecommunications Union)
voice coders. The Voice Coder list enables you to select from a range of coders with specific
bandwidths. The higher the bps rate, the more bandwidth is used. The channel that you are
calling has to have the same voice coder selected. Otherwise, you will always get a Fast Busy
signal.