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

							21 Chapter 3 - Installing the MVP120 SoftwareMulti-Tech Systems, Inc. MultiVOIP User Guide
Press Enter or click Next to continue.
5. The Choose Destination Location dialog box displays. Follow the on-screen
instructions.
You can either choose the Destination Location of your MVP120 software or select the
default destination by clicking Next. If you click Browse, you can select a different
destination folder for the MVP120 software.
6. In the Select Program Folder dialog box, select where you want the program file to be
located.
Verify the path and click Next to continue.
7. The Copying program files window displays, followed by the MVP120 Setup dialog
box. This dialog box enables you to select the COM port of your PC that is connected to
the Command port of the MVP120. From the Select Port list, choose the COM port of
your PC. 
						

							22 Chapter 3 - Installing the MVP120 SoftwareMulti-Tech Systems, Inc. MultiVOIP User Guide
Click OK to continue.
8. The Setup Complete dialog displays.
Click Finish to continue.
9. The following message displays:
Click Ye s to continue.
10. The following message displays.
 Click Ye s to continue.
11. The IP Protocol Default Setup dialog box displays as you continue now with the
configuring of your MultiVOIP, which is continued in Chapter 4. 
						

							


	


Chapter 4
Configuring the Master MultiVOIP 
						

							Multi-Tech Systems, Inc. MultiVOIP User GuideChapter 4 - Configuring the Master MultiVOIP
24
Chapter 4 - Configuring the Master MultiVOIP
The following steps provide instructions for configuring your MVP120. The configuration
sequence includes IP Protocol default setup, Channel setup, and Phone Directory Database
setup. The numbering of steps continues from the previous section.
12. The IP Protocol Default Setup dialog box displays.
The default Frame Type is TYPE_II. If this does not match your IP network, select SNAP
from the Frame Type list. The available Frame Type choices are TYPE_II and SNAP.
13. In the Ethernet group, enter the IP Address, Subnet Mask, and Gateway Address
unique to your IP LAN.
The IP address is the unique LAN IP address that is assigned to the MVP120, and the
Gateway address is the IP address of the device connecting your MVP120 to the
Internet.
Click OK when you are finished.
14. The Channel Setup dialog box displays. The four tabs in this dialog box define the
Channel Interface, Voice/Fax parameters, Billing/Miscellaneous parameters, and
Regional telephone parameters.
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. 
						

							Multi-Tech Systems, Inc. MultiVOIP User GuideChapter 4 - Configuring the Master MultiVOIP
25 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. 
						

							Multi-Tech Systems, Inc. MultiVOIP User GuideChapter 4 - Configuring the Master MultiVOIP
26 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 Automatic Coder is selected, then you need to select the Max Bandwidth from
the list. Check with your Network Administrator to determine how much bandwidth is
available.
19. The Fax group enables you to send/receive faxes on the selected voice/fax channel. You
can set the maximum baud rate for faxes, the fax volume, and change the jitter value in
milliseconds.
When receiving fax packets from a remote MVP120, it is possible for individual packets
to be delayed or received out of order due to traffic conditions on the network. To
compensate for this effect, the MVP120 uses a Jitter Buffer. The Jitter Value box allows
the MVP120 to wait a user-definable period of time, in milliseconds, for delayed or out of
order fax packets. The range of allowable Jitter Values is 0 to 400 with a default of 400
milliseconds.
If you do not plan to send or receive faxes on a given voice/fax channel, you can disable
faxes in the Fax group.
20. You can enable the voice/fax advanced features by selecting the Silence Compression,
Echo Cancellation, or Forward Error Correction options.
The Silence Compression option defines whether silence compression is enabled for
the voice channel. If Silence Compression is enabled, the 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.
If Echo Cancellation is enabled, the MVP120 will remove echo which improves the
quality of sound.
The Forward Error Correction (FEC) feature allows 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.
21. The Billing/Misc tab displays the parameters for auto call, automatic disconnection,
billing options, and dynamic jitter buffer.
If 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 number), click the Auto Call Enable option in the
Auto Call group. Then enter the phone number of the remote channel in the Phone
Number box.
22. The Automatic Disconnection group provides three options to be used singly or in
combination. 
						

							Multi-Tech Systems, Inc. MultiVOIP User GuideChapter 4 - Configuring the Master MultiVOIP
27 The Jitter Value defines the average inter-arrival packet deviation (in milliseconds)
before the call is automatically disconnected. Jitter is the inter-arrival packet deviation
(phase shift of digital pulses) over the transmission medium that causes voice breakup
which can be particularly disruptive to voice communications. The default is 20
milliseconds.  A higher value means that the voice transmission will be more accepting of
jitter.  A lower value will be 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 setting is 30.
Call 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.
23. You can set billing options for inbound and/or outbound calls by checking them in the
Billing Options group and then entering the charge in cents per number of seconds.
24. 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.
If your country/region is not the default USA, click the Regional tab and proceed to step
25; otherwise, click OK and proceed to step 26 to begin building your phone directory
database.
25. To change the Tone Pairs on the Regional tab, select your country or region from the
Country/Region list. 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.
26. The Phone Directory Database dialog box displays with the Proprietary PhoneBook
option enabled and no phone numbers entries displayed in the database. This dialog box 
						

							Multi-Tech Systems, Inc. MultiVOIP User GuideChapter 4 - Configuring the Master MultiVOIP
28 enables you to select either the GateKeeper or Proprietary PhoneBook.  Once you have
choosen the type of Phone Book database, you can proceed to registering with a
Gatekeeper in the following section (entitled, Registering with a Gatekeeper Phone
Directory).
If you are building a proprietary phone book, proceed to page 31. On page 31 the
Building a Proprietary Phonebook Directory section starts with Step 27. It is a
continuation of Step 26 on this page.
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 threshold for the number of
simultaneous conferences on the LAN.
 In a GateKeeper environment, you will be enabling the GateKeeper option, entering an IP address
for the GateKeeper, accepting the default port number, and if the GateKeeper network is servicing
Fast Start, accept the defaults in the Q.931 Parameters group. However, if this network zone is
primarily non-fast start supported, disable Use Fast Start.
27. Enable the Gatekeeper option
28. If the GateKeeper network employs Fast Start, then accept the Use Fast Start option
(default).  You may have to verify this with the GateKeeper administrator.
29. Enter the Gatekeeper IP Address in the IP Address box. 
						

							Multi-Tech Systems, Inc. MultiVOIP User GuideChapter 4 - Configuring the Master MultiVOIP
29 30. 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.
31. When you are finished with this dialog box, click Add to begin building your phone directory
database. The Add/Edit Phone Entry dialog box displays.
32. Enter the unique phone number of the local device in the Phone Number box.
33. Leave the Description box blank.
34. Enter the Voice Channel number corresponding to the phone number entered. MVP120
will always be Channel 1.
35. Fill in the H.323 ID / alias box with a description to identify the phone number. For this
example, you could enter “New York Office”.
36. Enter the IP Address of the MultiVOIP you are currently configuring in the IP Address box. 
						

							Multi-Tech Systems, Inc. MultiVOIP User GuideChapter 4 - Configuring the Master MultiVOIP
30 37. Click OK when you are finished and the Phone Directory Database dialog box displays
with the first entry in the window.
38. Click OK.
39. The following dialog box displays.
Click OK to download default setup.
40. After the setup has been written to the MVP120, the unit is rebooted.
41. Verify that the BOOT LED on the MVP120 is off after the download completes. This may
take several minutes as the MVP120 reboots.