Multitech Multivoip 100 Model Mvp120 Standalone Voice/ip Gateway Quick Start Guide

							41 Configuring MultiVOIP Slaves
The Forward Error Correction (FEC) option defines
whether forward error correction is enabled for the voice
channel. The 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.
The Billing/Misc tab displays the parameters for auto call,
automatic disconnection, billing options and dynamic jitter
buffer.
12. 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), click the Auto Call Enable option in the
Auto Call group. Then enter the phone number of the
remote MultiVOIP in the Phone Number box.
13. The Automatic Disconnection group provides three
options to be used singly or in combination. 
						

							MultiVOIP Quick Start Guide
42The 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 setting 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 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 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 checking 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 MultiVOIP, 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. 
						

							43 Configuring MultiVOIP Slaves
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 17.
16. To change the Tone Pairs on the Regional tab, click the
Country/Region down arrow and highlight your specific
country or region.
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.  Click OK when finished.
17. From the Main menu, click Phone Book to display the
Phone Directory Database dialog box.
Note: Refer to pages 24-27 if you had chosen Gatekeeper
as the type of phone book database during the master
phonebook setup. 
						

							MultiVOIP Quick Start Guide
44Make certain the Proprietary Phonebook option is
enabled and in the Database Type group, select the Slave
option. The Master IP Address box becomes active.
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 created, 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. 
						

							45 Deploying the VOIP Network
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 setup
configuration is written to the MVP120.  After the setup is
written to the MVP120, it reboots.
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.”
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 their Ethernet LAN and predefined telephone
equipment, and then wait for the phone directory database to
be downloaded. 
						

							MultiVOIP Quick Start Guide
46With 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. This 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 4).
ETHERNETPOWERPHONE
Power Connection
Ethernet Connection
XFO
Voice/Fax Channel
 Connection
FXO
PSTN
Figure 4.  Remote Site Cable Connection
2. Connect a network cable to the Ethernet (RJ-45)
connector on the back of your MVP120. 
						

							47 Warranty and Regulatory Information
3. The phone port is used to connect to an FXO device.
Connect an RJ-11 cable from the pnone connector to a
PBX analog port or a phone line from the phone company.
4. Turn on power to the MVP120 by placing the ON/OFF
switch on the right side panel to the ON position. Wait for
the BOOT LED on the MVP120 to go off before
proceeding. This may take a couple of minutes.
5. At this time your VOIP network should be fully operational.
Dial one of the sites in your network.
Limited Warranty
Multi-Tech Systems, Inc. (“MTS”) warrants that its products will be free from defects in
material or workmanship for a period of two years from the date of purchase, or if proof
of purchase is not provided, two years from date of shipment. MTS MAKES NO
OTHER WARRANTY, EXPRESSED OR IMPLIED, AND ALL IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
HEREBY DISCLAIMED. This warranty does not apply to any products which have been
damaged by lightning storms, water, or power surges or which have been neglected,
altered, abused, used for a purpose other than the one for which they were
manufactured, repaired by the customer or any party without MTS’s written
authorization, or used in any manner inconsistent with MTS’s instructions.
MTS’s entire obligation under this warranty shall be limited (at MTS’s option) to repair
or replacement of any products which prove to be defective within the warranty period,
or, at MTS’s option, issuance of a refund of the purchase price. Defective products
must be returned by Customer to MTS’s factory transportation prepaid.
MTS WILL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGES AND UNDER NO
CIRCUMSTANCES WILL ITS LIABILITY EXCEED THE PURCHASE PRICE FOR
DEFECTIVE PRODUCTS.
FCC Declaration
NOTE: This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses and can
radiate radio frequency energy, and if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense.
Warning:  Changes or modifications to this unit not expressly approved by the party
responsible for compliance could void the user’s authority to operate the equipment. 
						

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