Multi-Tech Systems MultiVOIP Model Mvp400/800 Standalone Voice/ip Gateway User Guide

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MultiVOIP Configuration
The MultiVOIP Setup menu consists of 10 buttons in which you can point and click, 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, define the output of the MultiVOIP, view statistics and call progress, and change
features such as SNMP Agent, Telnet Server, WEB Server, and assign a MultiVOIP password.
The Events window, in the center of the window provides information about the boot process.
The status bar at the bottom of the Setup menu displays the status of the unit, e.g., Running, the date
that the unit was configured, the type of connection on the command port, e.g., if the pc connected to
the command port is using its serial port to communicate with the MultiVOIP or if the pc is
communicating with the MultiVOIP via an Ethernet connection.  The last field on the status bar is the
Rights field which displays either Read/Write or Read only rights.  The first user to communicate with
the MultiVOIP has Read/Write rights.  This enables the first user to change the configuration of the
MultiVOIP.  A second user has read only rights which means they can only display the configuration
of the MultiVOIP.   
						

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Changing Channel Parameters
The channel parameters include the interface type and its options, voice and fax settings, and voice
communications for the region of the world that the MultiVOIP resides in. The Channel Setup dialog
box is accessed from the Main MultiVOIP menu. The Channel Setup dialog boxes contain three tabs
that partition the channels into three categories, i.e., interface, voice/fax, and regional.
Interface
The Interface tab defines the parameters related to the physical interface of the voice/fax channel.
Depending on the interface type selected (FXS, FXO, or E&M), other options on the interface tab will
turn grey (become inactive) indicating that they do not apply to the selected interface.  Max Dial
Digits, Inter Digit Time and Autocall features apply to all interface types.
The Max Dial Digits indicates the maximum number of digits the MultiVOIP will allow you to enter
when dialing one of the numbers in the Phone Directory Database.  As soon as you have entered this
number of digits, the MultiVOIP will immediately attempt to match the digits you have dialed with an
entry in the database.  The range for the Max Dial Digits is from zero to 16 digits with a default of five.
The Inter Digit Time (in milliseconds) option in the Dialing Options group defines the amount of time
the MultiVOIP waits between digits as they are entered by the user.  If this timer expires, the
MultiVOIP will immediately attempt to match the digits entered to an entry in the Phone Directory
Database. The range for this option is 200 to 10,000 with a default of 2,000.
The Auto Call option allows the local MultiVOIP to call a remote MultiVOIP without the user having to
dial a Phone Directory Database number.  As soon as you access the local MultiVOIP voice/fax
channel, the MultiVOIP immediately connects to the remote MultiVOIP that you identified in the
Remote MultiVOIP Phone Number field of this option.
FXS Interface
The FXS Interface is used to connect telephones, fax machines, key telephone systems, etc., to the
MultiVOIP.  In addition, you need to select either Loop Start or Ground Start.  Most of the equipment
mentioned will use Loop Start which is the default.
FXO Interface
The FXO Interface is used to connect PBX extensions or central office telephone lines.  You also,
need to select DTMF or Pulse dialing in the Regeneration field of the Dialing Options group.  If you   
						

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are unsure of the correct selection, contact the personnel in charge of your PBX or your local
telephone company to determine whether pulse or DTMF should be used.
E&M Interface
The E&M Interface is used to connect PBX E&M trunks.  You will need to select between Dial Tone or
Wink signaling and also between 2-wire and 4-wire mode.  If wink signaling is selected, the wink
timer field becomes active with a range from 100 to 350 milliseconds.  Contact the personnel in
charge of your PBX to determine the proper configuration of these settings.
FXO Disconnect On
The FXO Disconnect On option applies when two MultiVOIPs are used in an FXO-to-FXO
configuration.  When you have an FXO-to-FXO configuration, you need to determine the method of
terminating the call.  Three methods of terminating the call are provided:  Current Loss, Tone
Detection, or Silence Detection.  Current Loss is the preferred method.  Current Loss has to be
supported by your PBX or local telephone company.  Current Loss terminates the call when the PBX
or local telephone company switch detects a person hanging up the phone and opens the local circuit
for a minimum of 600 milliseconds.
Tone Detection disconnect method terminates the call when the party who wishes to disconnect
enters a one or two digit sequence on the telephone keypad.  Valid digits are zero to nine, *, #, and A
thru D.
Silence Detection can be silence in one direction or silence in both directions for a specified amount
of time.  The amount of time is defined by the entry in the Silence Timer.  The range of the Timer is
from one to 65535 seconds (roughly 18 hours).  The default is 15 seconds.
Voice/Fax
The Voice/Fax tab controls the voice coder, Fax settings, DTMF gain, and some miscellaneous
options.
The MultiVOIP supports many state-of-the art ITU (International Telecommunications Union) voice
coders. The Voice Coder drop-down menu 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   
						

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has to have the same voice coder selected; otherwise, you will always get a Busy signal.
The Fax group enables a fax machine to transmit and receive faxes through the MultiVOIP. If a fax
machine is connected to one of the voice/fax channels, 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 (see Chapter 6 - Warranty, Service and Tech Support).
The DTMF Gain group controls the volume level of the digital tones sent out for Touchtone dialing.
The Gain High and Gain Low fields 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.
Billing Options can be used to track the cost of Inbound and/or Outbound calls on any of the three
interfaces (FXO, FXS, or E&M).  The amount to be charged in cents is entered in the Charge (   )
Cents field together with the associated time duration in the Per (   )Seconds field.  While a given
call is active, the accumulated charges can then be viewed on the Call Progress dialog box. When
the call ends, the charges are transferred to a Log File that can be viewed by highlighting the call
event in the Log Entries dialog box and selecting Details.
The Authentication Option enables you to provide Password Protection on Inbound and/or
Outbound calls on any of the three interfaces (FXO, FXS, and E&M).  A password of up to 14
numeric characters can be assigned to either or both voice/fax channels. The required password
must then be entered from the device initiating a call over the protected voice/fax channel.
The Automatic Disconnect Option enables you to limit the duration of a call on any of the three
interfaces (FXO, FXS, or E&M). This function will hang up the call when a timer expires. The default
timer value of 15 seconds can be increased to any value up to 65535 seconds (roughly 18 hours).
Regional
The regional tab controls the voice communications for the country or region in which the MultiVOIP
is being used.
From the Country/Region drop-down list you can select the country or region for which you are
configuring the MultiVOIP. The Tone Pairs group always displays the tones used in the country or
region currently selected. In addition to Australia, Central America, Chile, Europe, France, Japan, UK,
and USA, there is a Custom selection (with defaults identical to USA) that will make the Custom
button active. Clicking the Custom button enables you to edit the Tone Pairs and establish custom
sets of tone pairs for Dial Tone, Ring, and Busy on a Custom Tone Pair Settings dialog box.
The Pulse Generation Ratio group contains two ratios: the 60/40 is for the USA, and the 67/33 ratio
is for international applications.   
						

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Changing the Phone Directory Database
The Phone Directory Database dialog box displays all the phone numbers in your MultiVOIP network.
The database displays the phone numbers in numerical order with the IP Address, Channel
assignment, and Description.
Access this database by clicking the Phone Book button on the Main MultiVOIP menu. You can add,
delete, or edit any entry in the database and you can change the master - slave relationship of the
database.  The Slave Status displays status of all the slave units in your VOIP network.  The Phone
Number of each slave is displayed with its IP Address, current line status, and the description of the
phone number.
The phone number does not have to be a conventional phone number; for example, it does not have
to be 717-5565. It can be a single digit or several digits, except it cannot be longer than the entry in
the Max Dial Digits field in the Dialing Options group of the Channel Setup dialog box. For example,
you could enter a phone number of 101 with a description of Jerry’s Desk, the phone number is
assigned to channel 1. If you want the call to be rolled over to a second channel, you can enable
Permit Hunting.  If the assigned channel is busy, then the call is rolled over to the next channel.
The MultiVOIP Identification group defines the type of addressing (Dynamic or Static) for the
master and slave units for their respective Phone Numbers.  The Phone Numbers assigned to the
master MultiVOIP have to be Static addressing and the Phone Numbers assigned to the slave
MultiVOIP can be either dynamic or static depending on whether a Proxy Server is providing the
connection to the Internet.  If a Proxy Server is in front of the MultiVOIP providing the Internet     
						

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connection and the Proxy Server is using dynamic addressing (i.e., the ISP is assigning the Proxy
Server IP address), then this slave MultiVOIP will be defined as using Dynamic addressing and the
IP Address field in the Identified By group will grey out (be inactive).
If a Proxy Server with a static IP address is in front of the slave MultiVOIP, then the Identified By IP
Address field must contain the address of the Proxy Server.
If the slave MultiVOIP is connected directly to the Internet, then its addressing mode must be Static.
If the slave unit is using Static addressing, then the IP Address field in the Identified By group has to
contain the Static IP address of the slave MultiVOIP.
The Ethernet Node ID is a 12-digit Identification Number assigned to each unit.  This Ethernet Node
ID number is a hardware identification number that is affixed to each unit during the manufacturing
process and cannot be changed.  This ID number (for example, 0008005xxxxx) is located on an ID
plate attached to every unit.  This ID number has to be entered in the Ethernet Node ID field for the
telephone number entered in the Phone Number field.  If you are assigning a Phone Number for a
slave unit, the Ethernet Node ID has to be for that slave unit.
If this plate is damaged or missing, you can also obtain the ID number by Telneting to the unit. From
the MultiVOIP Telnet Server menu, choose the Voice over IP Configuration option which takes you to
the Main Menu.  In the Main Menu, choose System Information and the ID number is presented in the
Ethernet Port Address of the System Information menu.
When you enter this information and click OK, the information is loaded into the phone directory
database.
To add a second entry, click Add(+) and the Add/Edit Phone Entry dialog box is again displayed.
The same data needs to be added for each channel. After the two local entries are added to the
database, then you need to turn your attention to the entries for the remote MultiVOIPs. The same
data has to be added for each remote MultiVOIP.
To establish the phone directory database for a remote MultiVOIP, you do not have to enter phone
numbers, but you have to check the Slave option in the Database Type group. When you click the
Slave option, the Update Database From group becomes active. You need to enter the IP address of
the MultiVOIP that you established as the Master.   
						

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Changing IP Parameters
The IP Setup dialog box establishes the IP addressing for the local Ethernet LAN, defines the Internet
gateway address, and if a proxy server is used to connect a LAN to the Internet, global-to-local IP
address translation is required. The IP Setup dialog box is accessed from the Main MultiVOIP menu
by clicking on the IP button.
When the IP Setup dialog box is displayed, the IP address of your LAN is displayed with its IP Mask.
The Gateway Address is the IP address of the device connected to the line that is connected to the
Internet.
Proxy Setup
The Proxy Setup is used when a Proxy Server is used to connect the LAN to the Internet. The Proxy
Setup dialog box is displayed by clicking on the Proxy Setup tab in the IP Setup dialog box.
If a Proxy Server is used in a MultiVOIP network, an address translation takes place within the
MultiVOIP to direct the phone call to the correct MultiVOIP, if more than one MultiVOIP is used in a
network.
When a MultiVOIP’s connection to the Internet is through a Proxy Server, the WAN port on the Proxy
Server must have a static registered IP address.  Remote MultiVOIPs will only be able to access a     
						

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MultiVOIP located behind a Proxy Server at the static IP address.  This static IP address will be used
in the Phone Directory Database when assigning directory numbers to this MultiVOIP.
The Global IP Address field must contain the static IP address of the WAN port of the Proxy Server.
The Local IP Address field must contain the local IP address of the MultiVOIP.  In this case the local
IP address is not used in the Phone Directory Database. 
						

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Viewing Statistics
The Statistics dialog box enables you to view statistics for major events of the MultiVOIP operation.
This dialog box is accessed by clicking on the Statistics button on the Main MultiVOIP menu.
Statistics can be a helpful troubleshooting tool. For example, viewing the Voice Channel statistics you
can see the attempted and completed calls, call duration, average call length, bytes/packets send
and received, etc.
IP Statistics
IP is a connection-less network protocol residing in the network layer of a conventional OSI layered
model (for more information on this model, refer to Appendix A). Depending on what is going on at
the application layer, IP will typically use one of two transport layer protocols. User Datagram
Protocol (UDP), a connection-less transport layer protocol used with TFTP or SNMP; and Transport
Control Protocol (TCP) is a connection-oriented transport layer protocol used with FTP, Telnet, and
SNMP.
UDP makes use of the port concept and has no measures for flow control, reliability, or error
recovery. It is used when the full services of TCP are not required, and the reliability measures must
be assumed by another layer.
TCP works well in environments where the reliability measures are not assumed by other layers. It is
connection-oriented and has a full range of services.     
						

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For the most part these statistics are informational, and their use as a troubleshooting tool will be
contingent on the applications running in the upper layers. For example, if you were having problems
connecting to the MultiVOIP’s web server, you would look under the TCP section to see if any
connections are being established. If not, that may indicate the web server is not enabled. Or, if you
were having problems establishing a remote connection through TFTP, you could look in the UDP
section to see if any packets are being received. If not, you may need to review your network
addressing.
SNMP Statistics
The SNMP Statistics dialog box provides statistical information on Simple Network Management
Protocol (SNMP).
SNMP is an application layer protocol that facilitates the exchange of management information
between network devices. There are three key components in SNMP: the devices that are to be
managed, agents, and the network management systems. The managed device is the network
device, like a router. The agent is the software module residing in the managed device pertaining to
network management. The network management system runs the SNMP application that controls the
managed devices and monitors their status. Four primary operations--Set, Get, Get Next, and Trap--
are performed using SNMP.
These statistics can help you to help troubleshoot should you have a problem communicating with
the MultiVOIP from your SNMP manager.