Multitech MultiVOIP MVP100GK Gatekeeper User Manual

MVP100GK

User Guide

User Guide

Gatekeeper
MVP100GK
S000353B Revision B

This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi­Tech Systems, Inc. All rights reserved.

Copyright © 2004 by Multi-Tech Systems, Inc.

Multi-Tech Systems, Inc. makes no representations or warranty with respect to the contents hereof and
specifically disclaims any implied warranties of merchantability or fitness for any particular purpose. Furthermore,
Multi-Tech Systems, Inc. reserves the right to re vise this pu blication and to make changes from time to time in the
content hereof without obligation of Multi-Tech Systems, Inc. to notify any person or organization of such revisions
or changes.

Record of Revisions

Revision Date Description
A 08/01/04 Manual released.
B 09/20/04 Manual updated to include new 25 user license and version 8.06.A7 software.

Patents

This device covered by one or more of the following patents: 6,031,867; 6,012,113; 6,009,082; 5,864,560;
5,815,503; 5,812,534; 5,790,532; 5,764,628; 5,764,627; 5,754,589; 5,724,356; 5,673,268; 5,673,257; 5,628,030;
5,619,508; 5,617,423; 5,600,649; 5,592,586; 5,577,041; 5,574,725; 5,559,793; 5,546,448; 5,546,395; 5,535,204;
5,500,859; 5,471,470; 5,463,616; 5,453,986; 5,452,289; 5,450,425; 5,309,562; 5,301,274

Trademarks

Trademarks of Multi-Tech Systems, Inc.: Multi-Tech, and Multi-Tech logo.
Windows is a registered trademark of Microsoft Corporation in the United States and other countrie s.
All products or technologies are the trademarks or registered trademarks of their respective holders.

Technical Support

Country By Email By Phone
France: [e-mail] (33) 1-64 61 09 81
India: [e-mail] 91 (124) 6340778
U.K.: [e-mail] (44) 118 959 7774
U.S. and Canada: [e-mail] [phone]
Rest of the World: [e-mail] [phone]

World Headquarters

Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
[phone] or [phone]
Fax [phone]
Internet Address: http://www.multitech.com

Contents

CHAPTER 1 - INTRODUCTION AND DESCRIPTION.............................................................. 4

Gatekeeper Basics......................................................................................................................................................................4

Features ......................................................................................................................................................................................6

Front Panel.................................................................................................................................................................................7

Back Panel..................................................................................................................................................................................8

Specifications..............................................................................................................................................................................8

CHAPTER 2 - INSTALLATION................................................................................................. 9

Safety Warnings.........................................................................................................................................................................9

Safety Recommendations for Rack Installations ....................................................................................................................9

Cabling......................................................................................................................................................................................10

Loading Gatekeeper Software ................................................................................................................................................12

Gatekeeper Configuration ......................................................................................................................................................16

CHAPTER 3 – GATEKEEPER FUNCTIONALITY.................................................................. 27

Getting Started.........................................................................................................................................................................27

VOIP Network Example .........................................................................................................................................................29

CHAPTER 4 - GATEKEEPER PROTOCOLS........................................................................ 51

CHAPTER 5 – GATEKEEPER SOFTWARE .......................................................................... 53

Configuration ...........................................................................................................................................................................54

Statistics....................................................................................................................................................................................61

Connection................................................................................................................................................................................63

GateKeeper...............................................................................................................................................................................64

Software User License Agreement .........................................................................................................................................83

CHAPTER 6 - WARRANTY, SERVICE, AND TECH SUPPORT............................................ 84

Repair Procedures for U.S. and Canadian Customers......................................................................................................... 84

Technical Support....................................................................................................................................................................85

Regulatory Information ..........................................................................................................................................................85

FCC Declaration ......................................................................................................................................................................86

INDEX...................................................................................................................................... 88

Chapter 1 – Introduction and Description

Chapter 1 - Introduction and

Description

Welcome to Multi-Tech’s new MultiVOIP™ Gatekeeper, Model MVP100GK, a turnkey hardware an d software
solution that enables network managers and intranet managers to define and control how H.323 voice traffic is
managed over IP networks. The Gatekeeper is a complementary product to the MultiVOIP family. The
Gatekeeper is an industry-standard mechanism for call control and routing, basic teleph ony services, H.323
bandwidth usage control, total network usage control, and overall system administration and security policies. It
includes fast, easy-to-use interfaces that network managers can use to modify or update zone configurations
when an individual on the network needs additional services. And, it provides call centers with the capability to
perform needs-based call routing as well as providing a variety of other automatic call distribution features.

Figure 1-1. Gatekeeper

Gatekeeper facilitates interoperability between PBX dial plans and IP-based terminals. With it, call centers can
route call on the basis of need and implement other automatic call distribution features, as well.

Gatekeeper Basics

Gatekeepers are optional within H.323 networks. However, when they are present, gateways (voip units) and
other network endpoint devices (like terminals and Multipoint Control Units used in co nferences) must use
Gatekeeper services. There are four functions that H.323 Gatekeepers must provide to the network and many
other functions, both standard and proprietary, that the Gatekeeper may offer to network participants.

Mandatory Gatekeeper Functions

The mandatory Gatekeeper functions are address translation, admission control, band width control, and zone
management.

Address Translation

The Gatekeeper supports aliases, such as conventional E.164 phone numbe rs, for e ach endpoint re gistered
within the zone. Users call each other within a zone by simply dialing a number or string of cha racters instead of
an IP address. This function is particularly important when a phone on the circuit-switched network tries to call a
phone connected to a gateway on an IP network.

Admission Control

The Gatekeeper determines which network participants can and cannot make calls, according to established
network permissions and rules. The Gatekeeper controls admission using H.225 “RAS” messages (Registration,
Admission, Status).

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Chapter 1 – Introduction and Description

Bandwidth Control

With the Gatekeeper, the network administrator can specify bandwidth limitations within a Gatekeeper’s zone and
can specify a bandwidth limit for gateway endpoints. The Gatekeeper controls bandwidth using H.225 RAS
messages. A Gatekeeper may determine there is no bandwidth available for a call or no additional ban dwidth
available for an ongoing call requesting an increase. Dynamic (situation-dependent) changes in bandwidth
allocation are typically called “bandwidth management,” which is considered an optional Gatekeeper function.

Zone Management

The Gatekeeper allows or disallows call traffic within the Gatekeeper’s zone, depending upon establish ed
permissions. The zone might be defined geographically (such as different branch locations), by physical network
connections (a range of IP addresses may comprise a zone, as may a subnet on a particular floor of a building),
or by a functional (organizational) paradigm.

Optional Gatekeeper Functions

The Gatekeeper supports the three main optional Gatekeeper functions: call control signaling, call authorization,
and bandwidth management.

Call Control Signaling

The Gatekeeper can, in “routed” mode, act as an intermediary for H.225 call-control signals between two
endpoints participating in a call. In “direct” mode, this function is turned off and the endpoints exchange H.225
call-control messages directly.

Call Authorization

The Gatekeeper can be programmed to restrict access (ad m ission and registration) according to criteria set by
the user.

Bandwidth Management

This is essentially dynamic bandwidth control (see “Bandwidth Co ntrol” section above).

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Chapter 1 – Introduction and Description

Features

• H.323 Version 2 compliance

• Admissions control determines whether H.323 devices are allowed to a ccess re sources (make calls)

• Address translation routes calls across your network

• Bandwidth control monitors and controls H.323 bandwidth usage to provide superior QoS

• Zone control and managemnt provides all defined call control services to all registered endpoints in the

gatekeeper’s zone

• Bandwidth management controls and limits the number of H.323 devices that are allowed to simultaneously
use the network

• Call routing allows you to direct calls to specified groups of gateways

• Call authorization/access authorizes or rejects a given call based on type of service, gateway restrictions or

lack of available bandwidth

• Support for Zone Prefix 1 and 2 where we accept calls from neighbouring gatekeepers (Inter Zone Calls)
using these two zone prefixes

• Intra-zone security mechanism to control calling activity within a zone using PBX-like prefix dialing

• Support for non-RAS endpoints such as Microsoft NetMetting

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Chapter 1 – Introduction and Description

Front Panel

The front panel has 4 front panel LEDs that provide operating status.

The Front Panel

Figure 1-2. Front Panel

Front Panel LED Descriptions

LED

Power Indicates the presence of power.
Boot After power up, the Boot LED will be on briefly while the Gatekeeper is booting. It lights whenever the

Gatekeeper is booting or downloading a set of configuration data.

LED Description of Ethernet LE Ds

LNK The LINK (LNK) LED indicates link integrity for the Ethernet port. When the LNK LED is on, the

Ethernet link is valid. When the LNK LED is blinking, the Ethernet link is active.

FDX

The Full DupleX (FDX) LED indicates either 10Mbps, 100Mbps, or a collision has occurred on the
Ethernet link. When the FDX LED is off, the Ethernet link is responding at 10Mbps. When the FDX
LED is on, the link is responding at 100Mbps. When the FDX LED is blinking, a collision has
occurred.

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Chapter 1 – Introduction and Description

Back Panel

The Gatekeeper back panel has a power plug, power switch, Comman d Port (RS232) for configuration, an
Ethernet jack (RJ45) for connection to your network, and a Command Modem for remote configuration.

Back panel

The back panel components are described in detail in the Cabling Procedure section in Chapter 2 of this manual.

Specifications

The Gatekeeper conforms to the following technical specifications.

• 10/100Mb EtherNet network

• Power requirement: 100-240V; 1.2 – 0.6V

• Frequency: 50-60 Hz

• Power Consumption: 27 Watts

• 1.75 inches high x 17.4 inches wide x 8.75 inches deep (4.5cm H x 44.2cm W x 22.2cm D)

• 7.1 lbs (3.2 kg)

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Chapter 2 – Installation

Chapter 2 - Installation

This chapter explains how to set up and connect cables for the Gatekeepe r. This product includes the Windows
operating system and Gatekeeper software, and is ready to be connected to an Ethernet concentrator.

Safety Warnings

1. Use this product only with UL- and CUL-listed computers.

2. To reduce the risk of fire, use only 26 AWG or larger telephone wiring.

3. Never install telephone wiring during a lightning storm.

4. Never install a telephone jack in a wet location unless the jack is specifically desig ned for wet locations.

5. Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected

at the network interface.

6. Use caution when installing or modifying telephone lines.

7. Avoid using a telephone during an electrical storm; there is a risk of electrical shock from lightning.

8. Do not use a telephone in the vicinity of a gas leak.

Caution: Danger of explosion if battery is incorrectly replaced. A lithium battery on the Gatekeeper board

provides backup power for the time-keeping capability. The battery has an estimated life expectancy of ten years.
Contact Multi-Tech if you suspect a failed battery. If date and time is incorrect after having the unit powered off, it
may be due to a weak battery or incorrect setup.

Caution: The Ethernet ports are not designed to be connected to a Public Telecommunication Network.

Safety Recommendations for Rack
Installations

• Ensure proper installation of the Gatekeeper in a closed or multi-unit enclosure by following the

recommended installation as defined by the enclosure manufacturer. Do not place the Gatekeeper di rectly
on top of other equipment or place other equipment directly on top of the Gatekeeper.

• If installing the Gatekeeper in a closed or multi-unit enclosure, ensure adequate airflow within the rack so

that the maximum recommended ambient temperature is not exceeded.

• Ensure that the Gatekeeper is properly connected to earth ground via a ground ed power cord. If a power

strip is used, ensure that the power strip provides adequate grounding of the attached apparatus.

• Ensure that the main supply circuit is capable of handling the load of the Gatekeeper. Refer to the power

label on the equipment for load requirements.

• Maximum ambient temperature for the Gatekeeper is 40 degrees Celsius (104° F).

This equipment should only be installed by properly qualified service personnel.

• Connect like circuits. In other words, connect SELV (Secondary Extra Low Voltage) circuits to SELV circuits

and TN (Telecommunications Network) circuits to TN circuits.

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Chapter 2 – Installation

Unpacking

Check the items on the Gatekeeper shipping list to ensure that you have received the correct options and
accessories. Unpack the unit and inspect it for visible shipping damage. If damage is observed, do not po wer-on
the unit; contact Multi-Tech's Tech Support for advice. If no damage is observed, place the Gatekeeper in its final
location.

Cabling

Cabling your Gatekeeper entails making the proper connections for po wer, command port, and Ethernet network.
Figure 2-1 shows the back panel connectors and the associated cable connections. The following procedure
details the steps necessary for cabling your Gatekeeper.

1. Connect the power cord to a live AC outlet, then connect it to the Gatekeeper’s power receptacle shown at
top right in Figure 2-1.

Figure 2-1. Cabling

2. Connect the Gatekeeper to the PC (the computer that will hold the Gatekeeper software) using the RJ-45 to
DB9 (female) cable provided with your unit. Plug the RJ-45 end of the cable into the Command port of the
Gatekeeper and connect the other end (the DB9 connector) to the PC serial port you are using (typically
COM1 or COM2).

3. Connect a network cable to the Ethernet connector on the back of the Gatekeeper. Connect the other end
of the cable to your network.

4. If you intend to configure the Gatekeeper remotely using the Gatekeeper Windows GUI, connect an RJ-11
phone cable between the Command Modem connector (at the rear of the Gateke eper) and a receptacle
served by a telco POTS line. See Figure 2-2

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Chapter 2 – Installation

The Command Modem is built into the Gatekeeper unit. To configure the Gatekeeper remotely using its Windows
GUI, you must call into the Gatekeeper’s Command Modem. Once a connection is made, the configuration
process is identical to local configuration with the Windows GUI.

Figure 2-2. GND & Remote Config Modem Connections

5. Ensure that the unit is properly connected to earth ground by verifying that it is reliably g rounded when
mounted within a rack.

This can be accomplished by connecting a grounding wire between the chassis grounding screw (see
Figure 3-9) and a metallic object that will provide an electrical ground.

6. Turn on power to the Gatekeeper by setting the power switch on the right side panel to the ON position.
Wait for the Boot LED on the Gatekeeper to go off before proceeding. This may take a couple of minutes.

Proceed to Loading Gatekeeper Software section.

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Chapter 2 – Installation

Loading Gatekeeper Software

The software loading procedure does not present every screen or option in the loading process. It is assumed
that someone with a thorough knowledge of Windows and the software loading process is performing the
installation.

The MultiVOIP Gatekeeper software and User Guide are contained on the Gatekeeper product CD. Because the
CD is auto-detectable, it will start up automatically when you insert it into your CD-ROM drive. When you have
finished loading your Gatekeeper software, you can view and print the User Guide by clicking on the View
Manuals icon.

1. Be sure that your Gatekeeper has been properly cabled and that the power is turned on.

2. Insert the Gatekeeper CD into your CD-ROM drive. The CD should start automatically. It may take 10 to
20 seconds for the MultiVOIP Gatekeeper MVP100GK AutoRun screen to display.

If the AutoRun screen does not display automatically, click My Computer, then right click the CD ROM
drive icon, click Open, and then click the Autorun icon.

3. When the AutoRun screen appears, click the Install Software icon.

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4. A ‘Thank you for choosing..’ screen appears.

Chapter 2 – Installation

Press Enter or click Next to continue.

5. Follow the on-screen instructions to install your Gatekeeper software. The first screen asks you to choose
the folder location of the files of the Gatekeeper software.

Choose a location and click Next.

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Chapter 2 – Installation

6. At the next screen, you must select a program folder location for the Gatekeeper software program icon.

Click Next. Transient progress screens will appear while files are being copied.

7. On the next screen you can select the COM port that the command PC will use when communicating with
the Gatekeeper unit. After software installation, the COM port can be re-set in the Gatekeeper Software
(from the sidebar menu, select Connection | Settings to access the COM Port Setup screen or use the
keyboard shortcut Ctrl + G).

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Chapter 2 – Installation

NOTE: If the COM port setting made
here conflicts with the actual COM
port resources available in the
command PC, this error message will
appear when the Gatekeeper program
is launched. If this occurs, you must
reset the COM port.

To change the COM port setting, use the COM Port Setup dialog box, which is accessible via the keyboard
shortcut Ctrl + G or by going to the Connection pull-down menu and choosing “Settings.” In the “Select
Port” field, select a COM port that is available on the PC. (If no COM ports are currently available, re­allocate COM port resources in the computer’s MS Windows operating system to make one available.)

8. A completion screen will appear.

Click Finish.

When setup of the Gatekeeper software is complete, you will be prompted to run the Gatekeeper software
to configure the VOIP.

Software installation is complete at this point.

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Chapter 2 - Gatekeeper Configuratrion

Gatekeeper Configuration

Three methods of configuring a Gatekeeper can be used; 1) Local configuration, 2) Remote configuration through
the command modem, or 3) Web-browser configuration. Also determining the configuration method is where the
Gatekeeper network is located. If the Gatekeeper’s network is within the contential United States, the Gatekeepe r
can be configured either using local configuration, where a PC is connected to the Command Port on the
Gatekeeper or remotely using the internal Command Modem connected to a dial up line and a remote PC
connected to a dial up line.

If the Gatekeeper’s network is outside the contential United States, then a minimual local configuration needs to
be accomplished, that is the Regional Parameters have to be set for the internal Command Modem. Then the
Gatekeeper could be shipped to its site, connected to its network, the internal Comm and Modem connected to a
dial up line, and then the configuration process could be finished using remote configuration.

Web-browser configuration can be used after the Gatekeeper’s IP address has been set.
Gatekeeper local configuration begins with the following procedure. If you are remotely configuring the

Gatekeeper through the command modem and the Gatekeeper’s network is within the contential US, you can skip
to the Remote Configuration procedure. If the Gatekeeper’s network is outside the contential US, you will have to
perform the local configuration procedure setting up the Regional Parameters and then you could proceed with
Remote Configuration through the command modem. If you want to use the Web-browser for configuration, you
will have to perform the local configuration setting up the Gatekeeper’s IP address. Then you can use the Web­browser.

1. Start Gatekeeper Configuration Program. Launch the Gatekeeper program from the Windows Start |
Programs | Gatekeeper X.XX (Version number) |Configuration and click .

2. The Gatekeeper main screen appears. If the main screen appears grayed out and seems inaccessible, verify
command port connection.

In the lower left corner of the screen, the connection status of the Gatekeeper will be displayed. The
messages in the lower left corner will change as detection occurs. The message “Gatekeeper Found”
confirms that the Gatekeeper is in contact with the Gatekeeper configuration program.

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Chapter 2 - Gatekeeper Configuratrion

Regional Parameters

If you are going to continue with the local configuration of the Gatekeeper and don’t plan to remotely access the
Gatekeeper through the command modem, you do not have to consider the Regional Parameters. Skip the
Regional Parameters and continue on with the setting of the Gatekeeper’s IP Address in the next section.

If you would like to configure the Gatekeeper once it is connected into the network that it is going to be used in,
you need to consider the Regional Parameters. If the Gatekeeper is being used in the United States, the default
parameter setting, the Regional Parameter does not have to be changed.

If the Gatekeeper is being used in any other country/region, the Regional Parameters have to be changed to that
country/region’s requirements.

Modem Configuration

Before you can remotely configure the Gatekeeper, the Command Modem on the Gateke eper has to be
connected to a dial up line, the phone number of that dial up line has to be known by the person configuring the
Gatekeeper remotely. The following modem configuration procedure provides you with the steps necessary to
connect the command modem to a dial up line once the Gatekeeper is connected to its network, the Gatekeeper
software loaded on the PC, and the dial up connection is established.

1. Once the Gatekeeper is connected to its network, connect an RJ-11 phone cable between the Command
Modem connector on the back panel of the Gatekeeper and a telephone jack that is connected telephone
line.

2. Find out the telephone number of this connection so that the person configuring the remote PC can enter
this phone number into the Dial String on the Com Port Setup screen.

3. Now, all activity is from the remote PC. Connect the remote PC to a dial up line.

4. Load the Gatekeeper software on the remote PC.

5. From your desktop, click on StartProgramsMultiVOIP Gatekeeper x.xx (x.xx is version number)
Configuration Port Setup and the COM Port Setup screen is displayed.

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Chapter 2 - Gatekeeper Configuratrion

6. Set the COM Port Setup Select Port and Baud Rate settings to match the communications port settings
of your local PC.

7. Enter the Gatekeeper’s Command Modem phone number in the Dial String window of the Modem Setup
preceeded by the AT dial command (atdt).

8. Click the OK button and the dialing sequence begins. The Reading Setup dialog box is displayed and
then the main Gatekeeper screen is displayed. This is the main screen of the remote Gatekeeper.

9. Click on Configuration|IP and you are ready to move to setting the IP address of the Gatekeeper.
Continue to the next section for setting the IP address.

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Chapter 2 - Gatekeeper Configuratrion

Set IP Parameters

From the Main Gatekeeper screen, click on Configuration|IP. In each field, enter the values that fit your
particular network.

1. Diff Serv Parameters group’s values pertain to a differential prioritizing system for IP packets as handled
by Diff Serv-compatible routers. The Call Control PHB (Per Hop Behavior) value prioritizes call se tup IP
packets. The Voip Media PHB value prioritizes the RTP/RTCP audio IP packets. Before changing these
default values, consult with a qualified IP telecommunications engineer or refer to the TCP/IP standards
described in the Gatekeeper Software Chapter 5, Configuration IP Parameters section of this User Guide.

2. Enter the IP address of your network in the IP Address window.

3. Enter the IP Mask address for your network in the IP Mask window.

4. If a gateway device connects the Gatekeeper to the Internet, enter the gateway’s IP address in the
Gateway window.

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Chapter 2 - Gatekeeper Configuratrion

Change Gatekeeper Name.

From the Main Gatekeeper screen, click on Gatekeeper|Parameters and the Network Parameters scre en is
displayed

1. In the GK-ID window change the default Gatekeeper name -MVP_SGK to your Gatekeeper name.

2. Click OK to save your new Gatekeeper name.

Web-browser Configuration

In most aspects of configuration, the Web-browser and Windows GUI differ only graphically, not functionally. The
Web-browser version number has to be at least 6 for Internet Explorer and Netscape. The Java Plug in on the
CD has to be loaded on to the PC using the Web-browser. Java is needed to support drop-down menus and
multiple windows in the Web-browser.

The initial configuration of assigning the Gatekeeper’s IP address has to be done locally. On ce the IP address is
assigned, then a PC on the same network and sub-net can access the Gatekeeper using a Web-browser. The
primary advantage of the Web-browser is remote access to a Gatekeeper.

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Chapter 2 - MultiVOIP Phone Book Configuration

MultiVOIP Phone Book Configuration

The Phone Book Configuration screen for each MultiVOIP registering with the Gatekeeper has to contain the
Gatekeeper IP address, Gatekeeper Name, and click on Register with Gatekeeper. A generic Phone Book
Configuration screen for a MVP410 and MVP 2410 is shown below.

The Gateway Name should have already been changed to the name for this MultiVOIP. The generic Phone Book
Configuration screen is shown for example and field definition purposes only.

1. To open the Phone Book Configuration screen, click Phone Book|Phone Book Configuration.

2. When you click the Register with Gatekeeper box, the Gatekeeper RAS Parameters group becomes active.

3. Enter the IP address of your Gatekeeper in the Gatekeeper IP Address window.

4. Enter your Gatekeeper Name in the Gatekeeper Name window.

5. Click OK to save your settings.

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Chapter 2 - MultiVOIP Phone Book Configuration

MultiVOIP Inbound Phone Book Configuration

Each MultiVOIP in your network requires at least one entry to receive a phone call from another MultiVOIP in your
network. Typically, a multiVOIP will have two Inbound Phone Book entries; one set for access to its local PBX
extensions and a second set for access to its local area PSTN.

Your first set of entries will typically provide access to this MultiVOIP’s local PBX extensions. You will need to
consider the Remove Prefix entry, Add Prefix entry, and the Registration Option at the lower left area of this
screen. The Registration Option that needs to be checked to provide access to the local PBX extensions is Tech
Prefix.

1. To open the Add/Edit Inbound Phone Book screen, click Phone Book|Phone Book Modify|Inbound
Phone Book|Add Entry.

2. Enter your remove prefix number in the Remove Prefix window to allow acces s to this MultiVOIP’s local
PBX extensions.

3. Enter your add prefix number in the Add Prefix window to allow access to this MultiVOIP’s local PBX
extensions.

4. If you want this MultiVOIP to allow any channel access to its PBX extensions, leave the Channel Number
option set for Hunting.

5. Enter a description (MultiVOIP’s location or site name, and possibly the words PBX extensions) in the
Description window. This will distinguish this Inbound Phone Book.

6. In the Registration Options group at the bottom of the screen, click on the Tech Prefix option.

7. Click OK when you have finished your entries in this Add/Edit Inbound Phone Book screen.

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Chapter 2 - MultiVOIP Phone Book Configuration

Your second set of entries in the Inbound Phone Book will typically provide access to this MultiVOIP’s local area
PSTN. You will need to consider the Remove Prefix entry, Add Prefix entry, and the Registration Option at the
lower left area of this screen. The Registration Option that needs to be checked to provide access to the local
area PSTN is H323 ID.

8. Enter your remove prefix number in the Remove Prefix window to allow acces s to this MultiVOIP’s local
area PSTN.

9. Enter your add prefix number in the Add Prefix window to allow access to this MultiVOIP’s local area PSTN.

10. If you want this MultiVOIP to allow any channel access to its local PSTN, leave the Channel Number option
set for Hunting.

11. Enter a description (MultiVOIP’s location or site name, and possibly the words Area PSTN) in the
Description window. This will distinguish this Inbound Phone Book.

12. In the Registration Options group at the bottom of the screen, click on the H323 ID option.

13. Click OK when you have finished your entries in this Add/Edit Inbound Phone Bo ok screen.

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Chapter 2 - MultiVOIP Phone Book Configuration

MultiVOIP Outbound Phone Book Configuration

Each MultiVOIP in your network requires at least one Outbound phone entry to call another MultiVOIP in your
network. Typically, a MultiVOIP will have two outbound Phone Book entries; one set to provide access to each
locations PBX extensions and a second set for access to each locations area PSTN.

Your first set of entries will typically allow access to a neighboring MultiVOIP’s PBX extensions. This will allow
your local phone users to dial out of the local area to a neighboring MultiVOIP location. You need to consider the
Destination Pattern and Remove Prefix in the Phone Number Details group, Description of this outbound phone
book, and check Use Gatekeeper box and enter your Gateway Prefix in the H.323 group.

1. To open the Add/Edit Outbound Phone Book screen, click Phone Book|Phone Book Modify|Outbound
Phone Book|Add Entry.

2. Enter your destination pattern value in the Destination Pattern window to provide access to the neighboring
MultiVOIP’s PBX extensions.

3. Enter your remove prefix value in the Remove Prefix window to provide access to the neighboring
MultiVOIP’s PBX extensions.

4. Enter a description (neighboring MultiVOIP’s location or site name, and possibly the words PBX extension)
in the Description window. This will distinguish this Outbound Phone Book.

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Chapter 2 - MultiVOIP Phone Book Configuration

5. In the H.323 group, click on the Use Gatekeeper option box.

6. Enter your gateway prefix value in the Gateway Prefix window.

7. Click OK when you have finished your entries in this Add/Edit Outbound Phone Book screen.

Your second set of entries will typically allow access to a neighboring MultiVOIP’s PSTN. This will allow your local
phone users to dial out of the local area to a neighboring MultiVOIP location. You need to consider the
Destination Pattern in the Phone Number Details group, Description of this outbound phone book, and check Use
Gatekeeper box and enter your Gateway H.323 ID in the H.323 group.

8. To open the second the Add/Edit Outbound Phone Book screen, click Phone Book|Phone Book
Modify|Outbound Phone Book|Add Entry.

9. Enter your destination pattern value in the Destination Pattern window to provide access to the neighboring
MultiVOIP’s PSTN.

11. Enter a description (neighboring MultiVOIP’s location or site name, and possibly the words PSTN) in the
Description window. This will distinguish this Outbound Phone Book.

12. In the H.323 group, click on the Use Gatekeeper option box.

13. Enter your Gateway H.323 ID value in the Gate way H.323 ID window.

14. Click OK when you have finished your entries in this Add/Edit Outbound Phone Boo k scre en.

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Chapter 2 - Connectivity Test

Connectivity Test

When you have finished configuring your inbound and outbound phone books for your VOIP network, verify that
your gateways are registered with the gatekeeper and then make a call to a VOIP in your network and verify that
the Gatekeeper is conducting the call correctly.

1. From the Gatekeeper main screen, click on GateKeeper|Endpoints and verify that gateways are
registered with the Gatekeeper.

2. From one of the gateways, dial another gateway in your network and verify that the call connected. From
the Gatekeeper main screen, click GateKeeper|Calls and your call should be viewed in the Current Calls
screen.

Your Gatekeeper is operational.

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Chapter 3 – Gatekeeper Functionality

Chapter 3 – Gatekeeper Functionality

This chapter describes how to configure and manage the Gatekeeper software. With Gatekeeper functionality,
network managers can define and control the flow of H.323 voice traffic across the IP network. In this chapter, we
will present both a general description of how Gatekeepers work and very specific information on how MultiTech’s
Gatekeeper unit operates. In cases where the actual Gatekeeper functionality implemented in the current
software release differs from theoretically possible Gatekeeper functionality, the differences will be noted (i.e., we
describe some Gatekeeper functionality that will only become available in a later software release and note all
such cases).

A Gatekeeper unit controls a “zone” on the IP network. (In fact, that is how a H.323 zone is defined; as the set of
endpoints controlled by a Gatekeeper.) One Gatekeeper unit is needed to control a single zone.

Network managers can configure, monitor, and manage the activity of registered net work endpoints. They can set
policies and control bandwidth usage, thus customizing their network fo r better advantage. Gatekeeper facilitates
interoperability between PBX dial plans and IP-based terminals. With it, call centers can route calls on the basis of
need and implement other automatic call distribution features, as well.

Getting Started

Gatekeeper units require configuration of their Gatekeeper parameters before they can control a group of voip
gateways.

Gatekeepers can be configured to enact a wide range of functionality, but they are primarily node points that
direct and manage traffic to other endpoints. The essential question of “whose messages go where?” can be
answered either by a Gatekeeper that acts as a coordinating node or clearinghouse for the system or by
phonebooks coordinated among the set of peer endpoints (gateways) that make up the system.

In its role as a node point, the Gatekeeper directs call traffic between pairs of endpoints enga ged in the call. To
facilitate this node-point control, all endpoints (voip gateways) must be registered with the Gatekeeper. This
registration is done in the

Gatekeeper | Existing Endpoints screen.

The basic function of directing calls to specified endpoints is done differently in Gatekeeper-controlled systems
than in systems controlled only by phonebooks. Phonebooks use “destinatio n patterns” like area codes and local

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Chapter 3 – Gatekeeper Functionality

prefixes to route calls to specific endpoints. When Gatekeepers perform this directive function, they do so by
using “services,” which one configures in the Gatekeeper | Services screen.

Suppose a voip system consists of three endpoints in three different cities all having different area codes. If this
voip system were controlled only by phonebooks, three different destination patterns (at least) would be needed; if
controlled by a Gatekeeper, three different services (at least) would be needed.

Also, generally, it’s best to configure the Gatekeeper as fully as possible before configuring other gateways in the
system. This is so because certain parameters that describe the Gatekeeper unit must be entered in the
configuration screens of the ordinary voip gateway units.

Furthermore and very importantly, several settings needed in the

Gatekeeper | Services screen must also be set in the Phonebook Configuration screen.

the

Gatekeeper | Existing Endpoints screen and in

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