Multi-Tech Systems Multivoip Model Mvp400/800 Standalone Voice/ip Gateway Quick Start Guide

21 Configuring  the MultiVOIP
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 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
MultiVOIP 400/800.  Output gain...

MultiVOIP Quick Start Guide
22Note: The DTMF gain should be changed only with the
assistance of Multi-Tech Technical Support.
18. To change the voice coder, select the channel from the
Select Channel list, then click Manual in the Coder group.
Select the new voice coder entry 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.
Note: If you allow the Coder to be...

23 Configuring  the MultiVOIP
will not transmit voice packets when silence is detected,
thereby reducing the amount of network bandwidth that is
being used by the voice channel.
The Echo Cancellation check box defines whether echo
cancellation is enabled for this voice channel. If echo
cancellation is enabled, the MultiVOIP 400/800 will remove
echo which improves the quality of sound.
The Forward Error Correction (FEC) check box defines
whether forward error correction is enabled (checked) for
this voice...

MultiVOIP Quick Start Guide
24If you want to dedicate a 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
in the Auto Call group. Then enter the phone number of
the remote MultiVOIP 400/800 in the Phone Number box.
22. The Automatic Disconnection group provides three
options to be used singly or in combination.
The Jitter Value defines the average inter-arrival packet
deviation (in milliseconds) before the call...

25 Configuring  the MultiVOIP
Dynamic Jitter Buffer. The Jitter Buffer allows the
MultiVOIP 400/800 to wait for delayed voice packets by
automatically adjusting the length of the Jitter Buffer
between allowable minimum and maximum values. An
Optimization Factor adjustment controls how quickly the
length of the Jitter Buffer is increased when jitter increases
on the network. The length of the jitter buffer directly
effects the voice delay between MultiVOIP 400/800
gateways.
The Minimum Jitter Value...

MultiVOIP Quick Start Guide
2625. To change the Tone Pairs on the Regional tab, select your
country or region from the Country/Region list.
Note: If your country or region is not listed, click Custom
to define it.
The Tone Pairs group enables you to select and modify
the parameters.  Click OK when finished. Proceed to step
26 to begin building your phone directory database. 

27 Configuring  the MultiVOIP
26. The Phone Directory Database dialog box displays with
the Proprietary PhoneBook option selected and no
phone numbers entries displayed in the database.  This
dialog box enables you to select either the GateKeeper or
Proprietary PhoneBook.  Once you have selected the type
of Phone Book database, you can proceed to Registering
with a GateKeeper Phone Directory in the following
section.  Or, if you are building a proprietary phone book,
proceed to the Building a Proprietary...

MultiVOIP Quick Start Guide
28
Registering with a Gatekeeper Phone Directory
This section describes how to register H.323 endpoints
with the Gatekeeper.  The H.323 Gatekeeper function
resides at a PC acting as the central point for all calls
within its zone and providing call control services to
registered endpoints.  The Gatekeeper performs two
important call control functions: address translation from
LAN aliases to IP addresses, and bandwidth management
where the network manager has specified a...

29 Configuring  the MultiVOIP
3. Enter the Gatekeeper IP Address in the IP Address box of
the RAS Parameters group.
4. Accept the default Port Number 1719.
CAUTION: The default setting for the Gatekeeper Port
Number is 1719. This can be changed to a different value
by the Gatekeeper administrator.  If you decide to change
the default Port Number, you must use the same number
on the Gatekeeper and all other H.323 endpoints.
5. Click Add when you are finished to begin building your
phone directory...

MultiVOIP Quick Start Guide
3010. Enter the Port IP Address of the MultiVOIP you are
currently configuring in the IP Address box.
11. Click OK when you are finished.  The Phone Directory
Database dialog box displays your first entry.
12. Click Add to enter your next phone listing.  The Add/Edit
Phone Entry dialog box displays.
13. Enter the second unique phone number of the local device
in the Phone Number box.  For example, 102.
14. Leave the Description box blank.