Multitech Multivoip 100 Model Mvp120 Voice/fax Over Ip Networks User Guide

							41 Chapter 5 - Configuring the Slave MultiVOIPs
Multi-Tech Systems, Inc. MultiVOIP User GuideCall Duration defines the maximum length of time (in seconds) that a call remains
connected before the call is automatically disconnected. The default setting is 180 seconds.
A call limit of three minutes may be too short for most configurations. Therefore, you may
want to increase this default value.
14. You can set billing options for inbound and/or outbound calls by selecting them in the Billing
Options group and then entering the charge in cents per number of seconds.
15. A minimum and maximum set of values can be set for Dynamic Jitter Buffer. When
receiving voice packets from a remote MVP120, it is possible to experience varying delays
between packets due to traffic conditions on the network. This is called Jitter. To compensate
for this effect, the MVP120 uses a Dynamic Jitter Buffer. The Jitter Buffer allows the MVP120
to wait for delayed voice packets by automatically adjusting the length of the Jitter Buffer
between configurable 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 MVP120
gateways.
The Minimum Jitter Value default setting is 150 milliseconds, the Maximum Jitter Value
default setting is 300 milliseconds, and the Optimization Factor default setting is 7.
16. 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/modify the parameters according to choice.
Click OK when finished.
17. From the Main menu, click Phone Book to display the Phone Directory Database dialog
box. Make certain the Proprietary Phonebook option is enabled and in the Database Type
group, click the Slave option. The Master IP Address field becomes active.
Note: Refer to pages 28-30 if you had chosen Gatekeeper as the type of phone book
database during the master phone book setup. 
						

							42 Chapter 5 - Configuring the Slave MultiVOIPs
Multi-Tech Systems, Inc. MultiVOIP User Guide
Note: After you have enabled the Slave option, the Slave Status button is replaced by the
Update button. Once your Phone Directory database has been established, you can click
this button to refresh the entries in the Phone Directory Database window.
18. Enter the IP address (204.022.122.118) of the New York Office MVP120 in the Master IP
Address box and enable the Send Status Report to Master so that status reports are sent
to the Master MVP120.
Note: In a Dial-On-Demand (DOD) network, you should leave Send Status Report to
Master disabled. This allows the router to disconnect whenever there is no voice activity.
Note that Slaves with Send Status Report to Master disabled will show up as “Unknown”
when viewing Slave status on the Master.
19. Click OK to return to the Main menu.
20. Click Download Setup to write the new configuration to the slave unit. The Save Setup
dialog box displays.
21. Select the Save Current Setup as User Default Configuration check box and click OK.
The Writing Setup dialog box displays as the setup configuration is written to the MVP120.
22. Check that the Boot LED on the MVP120 is off after the download is complete. This may
take several minutes as the MVP120 reboots.
23. You are returned to the Main menu.
Your MVP120 is operational at this time. Repeat the process for each of the slave units. When all
slaves have been configured, go to “Deploying the VOIP Network”. 
						

							


	


Chapter 6
Deploying the VOIP Network 
						

							44 Chapter 6 - Deploying the VOIP Network
Multi-Tech Systems, Inc. MultiVOIP User Guide
Chapter 6 - Deploying the VOIP Network
For a Proprietary Phone Directory database, the VOIP administrator can deploy the pre-
configured slave MVP120s to their remote sites. The remote site administrators need only
connect power to the pre-configured MVP120, connect the MVP120 to the Ethernet LAN and
predefined telephone equipment, and then wait for the phone directory database to be
downloaded.
With the Gatekeeper option enabled on the Phone Directory Database dialog box, all MVP120s
are configured as Gatekeeper and cannot be downloaded. In this case, each MVP120 Phone
Book will be programmed with phone numbers for its own channel. The phone number is
registered with the H.323 Gatekeeper.  See the “Registering with a Gatekeeper Phone Directory”
section discussed earlier.
Remote Site Administrator
The following steps are for MVP120 H.323 endpoints. For non-MVP120 H.323 endpoints, refer to
the appropriate installation documentation.
1. Connect one end of the power supply to a live AC outlet and connect the other end to the
Power connection on your MVP120 (See Figure 5).
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                               Remote Site Cable Connection
3. Connect a network cable to the ETHERNET (RJ-45) connector on the back of your
MVP120.
4. If you are connecting an FXO / PBX port or PSTN to your MVP120, connect one end of
an RJ-11 cable to the Phone connector on the back of the MVP120 and the other end to
the FXO or PSTN.
5. Turn on power to the MVP120 by placing the ON/OFF switch on the right side panel in
the ON position. Wait for the BOOT LED on the MVP120 to go off before proceeding.
This may take a couple of minutes.
6. At this time your VOIP network should be fully operational. Dial one of the sites in your
network. 
						

							


	


Chapter 7
 Using the MultiVOIP Software 
						

							46 Chapter 7 - Using the MultiVOIP Software
Multi-Tech Systems, Inc. MultiVOIP User Guide
Chapter 7 - Using the MultiVOIP Software
This chapter describes various features of the MVP120 software that enable you to change
the configuration of your MVP120. The default configuration parameters were entered during
the loading of the software. The MVP120 software and configuration utilities described in this
chapter enable you to change that initial configuration as necessary.
The primary interface to the MVP120 software is the Main menu (MultiVOIP 100 Setup is on
the title bar) with individual buttons that enable you to quickly and easily select a desired
function. These features are discussed in detail in the MVP120 Configuration section later in
this chapter.
The MVP120 Configuration (Main menu) utility along with nine other configuration utilities
provide full software functionality for your MVP120. 
Configuration Port Setup enables you to change the method by which you access the
MVP120, whether through a direct connection from a PC to the Command Port on the
MVP120 or via your Internet or LAN connection to the LAN port on the MVP120.
Date and Time Setup enables you to easily set the date and time used for data logging in
the MVP120.
Download Factory Defaults
 enables you to return the configuration to the original factory
settings.
Download Firmware enables you to download new versions of firmware as
enhancements become available.
Download User Defaults
 enables you to repeat the download user defaults process (part
of software installation) and update the MVP120 configuration with any necessary
changes.
Download Voice Coders
 enables you to download voice coders to the MVP120 after
repair or upgrade.
Download H.323 Stack
 enables you to download the H.323 protocols to the MVP120
after repair or upgrade. 
Uninstall MVP120 Configuration removes most of the MVP120 software from your PC.
Upgrade Software downloads boot code, factory defaults, firmware, voice coders, and
H.323 stack; and then reboots the MVP120.
The MVP120 software includes a context-sensitive Help system. Clicking a Help [ 
? ] button
anywhere in the graphical user interface (GUI) will display definitions and recommended
values for the buttons, options, and fields on that dialog box or menu. Clicking the green
underlined text in the Helps displays a popup box of related supplementary information for that
topic. Clicking the Search button (just below the Help menu bar) displays an Index tab with a
list of entries. Click an entry, then click the Display button to display the text associated with
that topic.
Before You Begin
The MVP120 software operates in a Microsoft Windows environment. The MVP120 program
group contains icons for all the utilities described above. You can open the individual utility
programs by clicking Start | Programs | MultiVOIP 100 | 
(utility). 
						

							47 Chapter 7 - Using the MultiVOIP Software
Multi-Tech Systems, Inc. MultiVOIP User Guide
MVP120 Configuration
The MVP120 Setup menu consists of 10 buttons, an Events window in the middle of the
menu, and a status bar at the bottom of the menu. The 10 buttons allow you to display and
change the voice channels and IP protocol parameters, display and manage the Phone Book
listing, view statistics and call progress, and change features such as SNMP Agent, Telnet
Server, WEB Server, and assign a MVP120 password.
The Events window in the lower third of the Setup menu provides information about the boot
process.
The status bar at the bottom of the Setup menu displays the current status of the unit and
shows, for example, if it is Running, the most recent date the unit was configured, the type of
connection you have to the unit, and your rights. It shows if your PC is connected directly to
the command port of the MVP120 or is communicating with the Ethernet port.  The Rights
box which displays whether you have Read/Write or Read-Only rights. The first user to
communicate with the MVP120 command port has Read/Write rights that enable the user to
view and/or change the configuration of the MVP120.  Any additional simultaneous users
have Read-Only rights and can only display the configuration of the MVP120 but are
prohibited from changing the configuration. 
						

							48 Chapter 7 - Using the MultiVOIP Software
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Changing Channel Parameters
The channel parameters include the interface type and its options, voice and fax settings,
billing and security, and voice communications for the country and region in which the
MVP120 is operating. The Channel Setup dialog box, accessed by clicking Voice Channels
on the Setup menu, has four tabs that display the following categories of channel information
-- Interface, Voice/Fax, Billing/Misc, and Regional.
Interface Tab
Check with your in-house telephone personnel to verify whether your local PBX dial signaling
is Pulse or DTMF (tone).  Select the Regeneration option accordingly.
In the Inter Digit Time box, enter the maximum amount of time between dialed digits in
milliseconds that the unit will wait before mapping the dialed digits to an entry in the Phone
Directory Database. If too much time elapses between digits, the wrong numbers will be
mapped and you will hear a rapid busy signal. If this happens, hang up and dial again. The
default setting is 2 seconds.
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.
The Ring Count FXO box enables you to set the maximum number of rings output 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.
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. 
						

							49 Chapter 7 - Using the MultiVOIP Software
Multi-Tech Systems, Inc. MultiVOIP User GuideFor 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 lossis 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 Tw o  Wa y, 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.
Voice/Fax Tab
The Voice/Fax tab controls voice and DTMF gain, voice coder, fax settings, and advanced
options.
In the Voice Gain group you can select the Input and Output voice gain. Gain is the increased
signaling power that occurs as the signal is boosted by the MVP120. The Input Gain list defines
the input gain for this voice channel. Before your MVP120 digitizes voice, 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. The valid range for this option is +31dB
to –31dB. The recommended and default value is 0. The Output Gain list defines the voice
output gain for this voice channel. Before your MVP120 converts digital voice back to analog, the
volume can be increased or decreased. The output gain modifies the level of the audio being
output to the device attached to the voice channel. The valid range for this option is +31dB to –
31dB. The recommended and default value is 0.
The DTMF Gain (Dual Tone Multi-Frequency) group controls the volume level of the digital tones
sent out for Touchtone dialing. The Gain High and Gain Low lists control the gain in dB
(decibels) of the High and Low tones in the tone pairs. The default gain values are -4 dB and -7
dB, respectively.  DTMF Gain should not be changed except under supervision of MultiTech’s
Technical Support.
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.
The MVP120 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 Busy signal. 
						

							50 Chapter 7 - Using the MultiVOIP Software
Multi-Tech Systems, Inc. MultiVOIP User GuideThe Fax group enables a fax machine to transmit and receive faxes through the MVP120. If a
fax machine is connected to the via PBX port or PTSN, the Max Baud Rate should be set to
match the baud rate of the fax machine (refer to user documentation). The Fax Volume setting
controls the output level of the fax tones, and this setting should be changed only under the
direction of Multi-Tech’s Technical Support personnel. The Jitter Value setting defines the inter-
arrival packet deviation (in milliseconds) for the fax transmission.  A higher value will increase
the amount of delay (allowing for a higher percentage of packets to be reassembled) and a
lower value would decrease the amount of delay (a lower percentage of packets would be
reassembled).
The Advanced Features group allows you to enable Silence Compression so that a MVP120
will not transmit voice packets when silence is detected, thereby reducing the amount of
network bandwidth that is being used by the voice channel; Echo Cancellation for the voice
channel will remove echo and improve the quality of sound; and, Forward Error Correction
allowing some of the voice packets that were corrupted (or lost) to be recovered. FEC adds an
additional 50% overhead to the total network bandwidth consumed by the voice channel.
Billing/Misc Tab
This tab controls the parameters for auto call, automatic disconnection, billing options, and
dynamic jitter buffer.
The Auto Call option allows the local MVP120 to call a remote MVP120 without the user
having to dial a Phone Directory Database number.  As soon as you access the local MVP120
voice/fax channel, the MVP120 immediately connects to the remote MVP120 that you identified
in the Remote MVP120 Phone Number field of this option.
The Automatic Disconnection group provides three options which can be used singly or in
any combination.  The Jitter Value defines the average inter-arrival packet deviation (in
milliseconds) before the call is automatically disconnected.The default is 20 milliseconds. A
higher value means voice transmission will be more accepting of jitter. A lower value is less
tolerant of jitter.
Consecutive Packets Lost defines the number of consecutive packets that are lost after
which the call is automatically disconnected. The default is 30 packets.
Call Duration defines the maximum length of time (in seconds) that a call remains connected
before the call is automatically disconnected. The default is 180 seconds.  A call limit of three
minutes may be too short for most configurations. Therefore, you may want to increase this
default value.