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Chapter 3 – Gatekeeper Functionality

Multi-Tech Systems, Inc. MultiVOIP Gatekeeper User Guide

29

VOIP Network Example

The present example shows a voip network with three gateways, and a Gatekeeper directing voip traffic. The
network design gives phone users at each office toll-free access to both the company employee phones (most are
on PBXs) at the remote sites as well as the local PSTNs surrounding the remote sites. To implement this network
you should configure the voip gateways at the three sites and then configure the Gatekeeper.

The top gateway is a T1 digital voip gateway (MVP2410) connected to a PBX at the company’s headquarters in
“Mucksville.” Also, at the company’s headquarters is a Gatekeeper with a separate IP connection to the IP
network for directing the voip traffic. The Gatekeeper should be configured after the voip gateways are
configured. The second gateway, located in one of the company’s small sales offices in “Rootersville,” is a first-
generation MultiTech gateway with two analog channels (MVP200), one serving an analog phone (via FXS
interface) and the other giving access to its local area PSTN (via FXO interface). The third gateway is an analog
model (MVP410) whose four channels are all connected (via FXO interface) to a PBX at a company’s factory site
in “Compton.”

To implement this network, lets start with the MultiVOIP gateway at the company’s headquarters.

1.

MVP2410

. For the MVP2410 at the company headquarters in Mucksville, we need to first configure its

phonebook with the Gatekeeper in mind. We will presume here that technical configuration is already
complete so that the MVP2410’s IP address and other technical configuration parameters have already
been duly set.

IP

NETWORK

PBX

Mucksville -- company headquarters

7000 – 7300

extensions

GW Prefix = 7 (access to

PBX extensions)

H.323 ID = 79 (access to

Mucksville PSTN)

MVP2410

Gateway

T1

analog phone

Rootersville -- sales office

6000

CH1

CH2

IP = 192.168.80.8

Ch2 H.323 ID = 6000 (access

to analog phone)

MVP200

Gateway

MVP410

PBX

Compton -- factory

FXO

Channels 1-4

Compton PSTN)

IP = 192.168.80.9

GW Prefix = 5 (access to

PBX extensions)

H.323 ID = 59 (access to

Channels 1-24

9, xxx-xxx-xxxx

Mucksville area

PSTN

IP = 192.168.80.143

FXS

FXO

Rootersville area

PSTN

Ch1 H.323 ID = 6 (access to

Rootersville PSTN)

GateKeeper

IP = 192.168.80.12

Gateway

Mucksville -- company

headquarters

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Содержание MultiVOIP MVP100GK Gatekeeper

Страница 1: ...MVP100GK User Guide...

Страница 2: ...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 6...

Страница 3: ...are 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...

Страница 4: ...an 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 gatew...

Страница 5: ...pon 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...

Страница 6: ...ndpoints 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 spe...

Страница 7: ...ghts 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...

Страница 8: ...nd 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 conf...

Страница 9: ...u 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 connecte...

Страница 10: ...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 Gatekeep...

Страница 11: ...nfig Modem Connections 5 Ensure that the unit is properly connected to earth ground by verifying that it is reliably grounded when mounted within a rack This can be accomplished by connecting a ground...

Страница 12: ...p 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 t...

Страница 13: ...4 A Thank you for choosing screen appears 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 l...

Страница 14: ...t 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 so...

Страница 15: ...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...

Страница 16: ...ser 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 t...

Страница 17: ...he Gatekeeper the Command Modem on the Gatekeeper 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 foll...

Страница 18: ...dem 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...

Страница 19: ...Per Hop Behavior value prioritizes call setup IP packets The Voip Media PHB value prioritizes the RTP RTCP audio IP packets Before changing these default values consult with a qualified IP telecommuni...

Страница 20: ...ration 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...

Страница 21: ...410 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 p...

Страница 22: ...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 r...

Страница 23: ...e prefix number in the Remove Prefix window to allow access 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 P...

Страница 24: ...a 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...

Страница 25: ...etails 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...

Страница 26: ...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 regis...

Страница 27: ...trol bandwidth usage thus customizing their network for better advantage Gatekeeper facilitates interoperability between PBX dial plans and IP based terminals With it call centers can route calls on t...

Страница 28: ...y 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 Gat...

Страница 29: ...ce and the other giving access to its local area PSTN via FXO interface The third gateway is an analog model MVP410 whose four channels are all connected via FXO interface to a PBX at a company s fact...

Страница 30: ...ion Mucksville PSTN H323 Register as H323 ID Dial 79 plus Mucksville local number Outbound PhoneBook Screen Settings 3 Get access to Compton factory PBX extensions Destination Pattern 5 RemovePrefix 5...

Страница 31: ...P2410 at the site Click on Register with Gatekeeper option and a check mark appears in the box This turns on the Gatekeeper information Mucksville MVP2410 MultiVOIP Enter the Gatekeeper IP Address in...

Страница 32: ...en enter a 7 in the Add Prefix window The Channel Number can remain at the default of Hunting which enables the MVP2410 to direct the calls to any available channel Now add a description for this Inbo...

Страница 33: ...emove Prefix window Then enter a 9 in the Add Prefix window The Channel Number can remain at the default of Hunting which enables the MVP2410 to direct the calls to any available channel Now add a des...

Страница 34: ...enter the details for each entry in a separate Add Edit Outbound PhoneBook screen Mucksville MVP2410G MultiVOIP Adding Outbound Phonebook Entries gaining access to a remote site PBX and to a remote a...

Страница 35: ...MultiVOIP Gatekeeper User Guide 35 The four outbound entries for the Mucksville MVP 2410 are displayed in the Outbound Phone Book Mucksville MVP2410 MultiVOIP 5 MVP2410 Save the MVP2410 PhoneBook Con...

Страница 36: ...screen settings Phone User s Actions Put MVP200 gateway under Gatekeeper control Select Gatekeeper radio button RAS Parameters IP Address 192 168 80 12 IP Address 192 168 80 8 Allow remote users acce...

Страница 37: ...ers in the IP Address field enter the IP address of the gatekeeeper 192 168 80 12 Then add the two required destination patterns 6000 will direct calls to the analog phone in the Rootersville office 6...

Страница 38: ...ove Prefix 5 Add Prefix 5 Description Compton PBX Extensions H323 Register as Tech Prefix Dial 4 digits beginning with 5 Give remote users access to Compton area PSTN Remove Prefix 59 Add Prefix 9 Des...

Страница 39: ...ou have a MVP410 at that site Click on the Register with Gatekeeper option and a check mark appears in the box This turns on the Gatekeeper information Compton MVP410 MultiVOIP Enter the Gatekeeper IP...

Страница 40: ...nter a 5 in the Add Prefix window The Channel Number can remain at the default of Hunting which enables MVP410 to direct the calls to any available channel Now add a description for this Inbound Phone...

Страница 41: ...Prefix window Then enter a 9 in the Add Prefix window The Channel Number can remain at the default of Hunting which enables MVP410 to direct the calls to any available channel Now add a description f...

Страница 42: ...click on Add at the Outbound PhoneBook screen and enter the details for each entry in a separate Add Edit Outbound PhoneBook screen Compton MVP410 MultiVOIP Adding Outbound Phonebook Entries gaining a...

Страница 43: ...or the Compton MVP410 are displayed in the Outbound Phone Book Compton MVP410 MultiVOIP 14 MVP410 Save the MVP410 PhoneBook Configuration the Save Setup command is in the sidebar menu before proceedin...

Страница 44: ...n factory PBX extensions Allow as default to online endpoints Y Allow as public for Out of Zone Endpoints Y Dial 4 digits beginning with 5 Access to Compton area PSTN Allow as default to online endpoi...

Страница 45: ...in outbound phonebook screens Even though they serve a function similar to destination patterns the service and prefix Gatekeeper entries do not eliminate the need for phonebook destination patterns...

Страница 46: ...MultiVOIP Gatekeeper User Guide 46 To create each of the two required GK Defined Services you must click on Add in the Gatekeeper Services screen and enter the details for each entry in a separate Ser...

Страница 47: ...work wide access to the Compton factory PBX extensions the Gateway Prefix of the Compton factory MVP410 s PhoneBook Configuration screen must be set to 5 When this setting has been made and when that...

Страница 48: ...as seen in the Gatekeeper s software display allowed services are system wide whereas supported services are those that are active in that particular voip endpoint The Gatekeeper will route calls to...

Страница 49: ...system We dial a sequence complete the call and then look at the Call Progress screen of the voip unit at which the call is completed 21 MVP200 A call from the Rootersville office to its local PSTN c...

Страница 50: ...de 50 23 MVP410 A call from the Rootersville analog phone to a Compton area PSTN number can be dialed 59 7637172522 Compton MVP410 MultiVOIP 24 MVP2410 A call from a Compton PBX user to a Mucksville a...

Страница 51: ...f common H 225 messages below Summary of H 323 RAS Messages Registration Admission Status of the H 225 Call Signaling Protocol In a Gatekeeper controlled H 323 network when call is made the RAS channe...

Страница 52: ...The Gatekeeper can either grant the request by sending an RCF message or deny the request by sending an RRJ message If an endpoint s registration with the Gatekeeper is temporary its duration is spec...

Страница 53: ...oftware the Configuration section allows you to configure the IP address for the Gatekeeper the Statistics Save Setup Connection controls the interface for the PC configuring the Gatekeeper and the Ga...

Страница 54: ...P parameters define the country region is which the Gatekeeper is operating in view logs and display system information IP Parameters The IP parameters screen allows you to set the IP parameters for t...

Страница 55: ...default values of 34 and 46 consult these standards documents and or a qualified IP telecommunications engineer To disable Diff Serv configure both fields to 0 decimal The next page explains Diff Serv...

Страница 56: ...r defaults to the value 46 decimal 2E hex 101110 binary consider vis vis TOS field above To disable Diff Serv configure both fields to 0 decimal IP Parameter Definitions cont d Field Name Values Descr...

Страница 57: ...to a telco POTS line and a remote PC has to be configured to dial the PSTN number of the command modem In order for the remote PC to be able to reconfigure the Gatekeeper the Gatekeeper software woul...

Страница 58: ...tering the IP address of the server The default setting in the Console message Settings group and the default setting in the Console Messages Filter Settings screen allow you to print all console mess...

Страница 59: ...11560 Trans Name Party Num EMail URL 00111560 A complete call message displayed in HyperTerminal may take up a full page To display limited messages from the print console the default Enable Console M...

Страница 60: ...en displays the Gatekeeper boot firmware and configuration version levels Also the MAC address and an uptime meter The System Information screen is useful for determining the firmware and software lev...

Страница 61: ...eper User Guide 61 Statistics The displayed statistics parameters provide various transmitted and received packets totals IP Statistics The IP Statistics screen displays the Gatekeeper IP Address vari...

Страница 62: ...l between Tests to the number of minutes 0 30 to wait between each ping test If this field is set to 0 only one ping test is performed The Ping Size in Bytes and Response Timeout values can be changed...

Страница 63: ...to be known by the person configuring the PC The local PC needs to be connected to a dial up line and the Gatekeeper software be loaded on the local PC From your desktop click Start Programs MultiVOIP...

Страница 64: ...menu at the left of the screen You will not see General Settings if you expand the GateKeeper pull down The fields in the General Settings screen are described in the table below GK General Settings D...

Страница 65: ...he higher the value the greater the details in Syslog or Console reports Buttons Memory Settings Launches secondary screen on Memory issues See next table Click on the Memory Setting button to access...

Страница 66: ...y fetched no response RAS Port The RAS port for Gatekeeper communication with endpoints Default value 1719 Q 931 Parameters In H 323 Q 931 parameters are those that pertain to the set up and tear down...

Страница 67: ...n be static essentially permanent or dynamic timed or conditional Existing Endpoints Parameter Definitions Field Name Values Description Type Gatekeeper Gateway MCU Terminal or Undefined The endpoint...

Страница 68: ...URQ or AppURQ which is a URQ sent by the Gatekeeper TTL seconds The time remaining in seconds before the TimeToLive timer expires If the endpoint fails to reregister within this time the endpoint is...

Страница 69: ...and the basic details of the calls Current Calls Field Definitions Field Name Values Description No numeric Number A sequential number for identification in the list ORIG IP n n n n 0 255 Originating...

Страница 70: ...ing on a selected call listed in the Current Calls screen The Call Details screen contains general information about the call as well as details about the call s source endpoint and destination endpoi...

Страница 71: ...is direct or routed For direct mode calls the Gatekeeper gives each endpoint involved in the call the destination address of the other and establishes a common call signaling channel for them to use...

Страница 72: ...An e mail address of the originating endpoint OtherAliases Trans Name Transport Name An alias of the originating endpoint consisting of an IP address and port number Other Aliases URL A Internet type...

Страница 73: ...used to make the call Call Signaling IP The call signaling transport address of the called endpoint Reg Bandwidth Requested Bandwidth The bandwidth the called endpoint requested for the call as it app...

Страница 74: ...scribed in the table below Network Parameter Definitions Field Name Values Description Status Information Use Update button to refresh the Status Information fields Ongoing Calls number The number of...

Страница 75: ...a pregranted ARQ permission in the RCF message for each endpoint that wishes to register The pregranted ARQ permission is given to both makeCall and answerCall with routed mode When an endpoint receiv...

Страница 76: ...keeper will send a Q 931 call proceeding message to the originating endpoint after it receives a return call proceeding message back from the destination endpoint Call Mode Direct Mode Sets the call m...

Страница 77: ...ling set this value to zero The effective IRQ interval cannot fall below three times the RAS timeout IRQ messages will not be sent at a rate exceeding 20 per second Call IRQ Interval The interval in s...

Страница 78: ...Parameters GK ID The name of the Gatekeeper The terminals identify the Gatekeeper by this name during the discovery process The Gatekeeper responds only to Discovery requests that either contain a mat...

Страница 79: ...description of the service that is accessible by dialing the prefix See GK Defined Service Types section on following pages Default For any GK defined service being used the user must select either De...

Страница 80: ...line hunting is possible between the gateways Prefix Identifies the service The prefix can be a numeric code alphanumeric string name or phone number that the user dials Per H 323 Vers 2 prefixes can...

Страница 81: ...g its own configuration Then using RAS messages the endpoint is registered with a name or a phone number identical to the service prefix The service prefix is predefined for the endpoint using the con...

Страница 82: ...ixes Zone A has a 01 prefix In this zone the phone number of user A1 is 123 and the phone number of user A2 is 456 The Gateway service has a prefix of 8 Zone B has a 02 prefix In this zone the phone n...

Страница 83: ...greement may not be copied reproduced published licensed sub licensed distributed transferred or made available in any form in whole or in part to others without expressed written permission of Multi...

Страница 84: ...PRICE FOR DEFECTIVE PRODUCTS Repair Procedures for U S and Canadian Customers In the event that service is required products may be shipped freight prepaid to our Mounds View Minnesota factory Multi T...

Страница 85: ...2 2439 Rest of World support multitech com 763 785 3500 Internet http www multitech com _forms email_tech_support htm Please have your product information available including model and serial number R...

Страница 86: ...n Rules On the outside surface of this equipment is a label that contains among other information the FCC registration number This information must be provided to the telephone company 2 As indicated...

Страница 87: ...facilities of the local telecommunications company The equipment must also be installed using an acceptable method of connection The customer should be aware that compliance with the above conditions...

Страница 88: ...sages H 225 52 BRJ Bandwidth Rejection messages H 225 52 BRQ Bandwidth Request messages H 225 52 C call authorization 5 Call Control PHB field 55 call control signaling 5 Call Details Destination Info...

Страница 89: ...5 direct mode calls 71 Disconnect All button Current Calls screen 69 Disconnect All button Current Calls 69 Disconnect Call button Current Calls screen 69 Disconnect Call button Current Calls 69 Disco...

Страница 90: ...ias Giving 75 Call IRQ Interval 78 Call Proceeding 76 Call to Out of Service Supplier 75 Configuration Parameters 78 Current BW Usage 74 Currently Registered 74 Direct Mode Call Mode option 76 IRQ Int...

Страница 91: ...outed Mode option Network Parameters 76 Routed Mode option Network Parameters Call Mode 76 routed mode calls 71 RRJ Registration Rejection messages H 225 52 RRQ messages 75 RRQ Registration Request me...

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