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

							21 Configuring the MultiVOIP
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.
11. 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 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 setting is 30. 
						

							MultiVOIP Quick Start Guide
22Call 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.
12. 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.
13. 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 MultiVOIP
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 14.  Otherwise, click
OK and proceed to step 15 to begin building your phone
directory database.
14. 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. 
						

							23 Configuring the MultiVOIP
The Tone Pairs group enables you to select and modify
the parameters.  Click OK when finished.
15. The Phone Directory Database dialog box displays. This
dialog box enables you to select either GateKeeper or
Proprietary Phone Book as your type of phone book
database. Once you have choosen the phone book
database type, you can proceed to registering with a
Gatekeeper in the following section or, if you are building a
proprietary phone book database, proceed to Building a
Proprietary Phone Book Directory. 
						

							MultiVOIP Quick Start Guide
24
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, clear the
Use Fast Start check box. 
						

							25 Configuring the MultiVOIP
1. Enable the Gatekeeper option
2. If the GateKeeper network employs Fast Start, then
accept the Use Fast Start option (default) in the Q.931
Parameters group. You may have to verify this with the
GateKeeper administrator. If Use Fast Start option is
selected, accept the Call Signaling Port default 1720.
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. 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.
6. Enter the unique phone number of the local device in the
Phone Number box.
7. Leave the Description box blank. 
						

							MultiVOIP Quick Start Guide
268. Enter the Voice Channel number corresponding to the
phone number entered. The MVP120 will always be 1.
9. Fill in the H.323 ID box with a description to identify the
phone number. For this example, you could enter “New
York Office.”
10. Enter the IP Address of the MultiVOIP you are currently
configuring in the IP Address box.
11. Click OK when you are finished and the Phone Directory
Database dialog box displays with your first entry. 
						

							27 Configuring the MultiVOIP
12. Click OK when you are finished.
13. Click OK to download setup.
14. The following dialog box displays.
Click OK to download default setup.
15. After the setup has been written to the MVP120, the unit is
rebooted.
16. Verify that the BOOT LED on the MVP120 is off after the
download completes. This may take several minutes as
the MVP120 reboots.
Note: Since the MVP120 doesn’t have a power LED, no
LEDs will be lit if there is no activity after boot up, unless
the ethernet port is connected to the network. 
						

							MultiVOIP Quick Start Guide
28
Building a Proprietary Phonebook Directory
1. To build your proprietary Phone Directory (in an H.323
environment without the Gatekeeper option enabled), you
will first need to select the Proprietary Phonebook option
and then configure the “Master” MVP120 and then add the
“Slave” MultiVOIPs (or other H.323 endpoints).
Configuring the “Slave” MultiVOIPs is discussed later.
The MultiVOIP, configured as Master, contains the
proprietary phonebook database. All other MultiVOIPs
added to the proprietary phonebook database are
designated Slaves. The Master database contains the
phone numbers of all H.323 endpoints available for
communication on an IP network. This database is
downloaded to each Slave MultiVOIP as it comes online.
2. To configure the Master MVP120, make certain that the
Proprietary Phonebook and Master options are enabled.
The Master IP Address, Send Status Report to Master,
and RAS Parameters group will be disabled.
The Slave Status button displays the Slave VOIP Status
dialog box used for viewing phone number, IP address, 
						

							29 Configuring the MultiVOIP
status, and description of slave units (See “Configuring
Your Slave MVP120s” for details). Note: In the Q.931
Parameters group, Use Fast Start is checked for
compatibility with other H.323 devices that support Fast
Start capability.
Click Add to begin building your phone directory database.
The Add/Edit Phone Entry dialog box displays.
Configuring Your Master MVP120
1. Enter a unique phone number for the local VOIP in the
Phone Number box, and enter 1 for the voice/fax channel
number in the Voice Channel box. The number must be 1
for each MVP120.
2. The Description box is optional, but can be useful in
associating the channel with the location. If you wish, enter
a description of your local phone number. This description
serves to identify the phone number you entered in the
previous step. Normally the Master MultiVOIP resides at
the entity’s main office. Therefore, for this example you
could enter a description such as “New York Office”. 
						

							MultiVOIP Quick Start Guide
303. The Station Identification group includes a Hunt Group
list. This list enables you to indicate which Hunt Group you
want the phone number to be associated with. Select the
Hunt Group number from the Hunt Group drop down list
box, or you can select NO HUNT if you do not want this
entry to participate in hunting.
Note: Hunting is a series of telephone lines organized in
such a way that if the first line is busy the next line is
called or hunted until a free line is found.
Once you have selected a Hunt Group (or NO HUNT), you
must enter the IP Address of the Master MVP120 in the IP
Address box.
Note: The Port box becomes active as you begin to enter
the IP Address. The entry is the H.323 industry standard
Port value (1720) used to communicate with other H.323
endpoints.
4. Click OK to return to the Phone Directory Database
dialog box. It now includes the phone number, destination
details, and description of Hunt Group #1.