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 Multi-
Tech 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 revise this publication 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 countries.
All products or technologies are the trademarks or registered trademarks of their respective holders.
Technical Support
Country By Email By Phone
France: [email protected] (33) 1-64 61 09 81
India: [e-mail] 91 (124) 6340778
U.K.: [email protected]k (44) 118 959 7774
U.S. and Canada: [email protected] [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
Multi-Tech Systems, Inc. MultiVOIP Gatekeeper User Guide 4
Chapter 1 - Introduction and
Description
Welcome to Multi-Tech’s new MultiVOIP™ Gatekeeper, Model MVP100GK, a turnkey hardware and 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 telephony 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 conferences) 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, bandwidth control, and zone
management.
Address Translation
The Gatekeeper supports aliases, such as conventional E.164 phone numbers, for each endpoint registered
within the zone. Users call each other within a zone by simply dialing a number or string of characters 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).

Chapter 1 – Introduction and Description
Multi-Tech Systems, Inc. MultiVOIP Gatekeeper User Guide 5
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 bandwidth
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 established
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 (admission and registration) according to criteria set by
the user.
Bandwidth Management
This is essentially dynamic bandwidth control (see “Bandwidth Control” section above).

Chapter 1 – Introduction and Description
Multi-Tech Systems, Inc. MultiVOIP Gatekeeper User Guide 6
Features
•H.323 Version 2 compliance
•Admissions control determines whether H.323 devices are allowed to access resources (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

Chapter 1 – Introduction and Description
Multi-Tech Systems, Inc. MultiVOIP Gatekeeper User Guide 7
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 LEDs
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.

Chapter 1 – Introduction and Description
Multi-Tech Systems, Inc. MultiVOIP Gatekeeper User Guide 8
Back Panel
The Gatekeeper back panel has a power plug, power switch, Command 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)

Chapter 2 – Installation
Multi-Tech Systems, Inc. MultiVOIP Gatekeeper User Guide 9
Chapter 2 - Installation
This chapter explains how to set up and connect cables for the Gatekeeper. 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 designed 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 directly
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 grounded 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.

Chapter 2 – Installation
Multi-Tech Systems, Inc. MultiVOIP Gatekeeper User Guide 10
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 power-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 power, 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 Gatekeeper) and a receptacle
served by a telco POTS line. See Figure 2-2