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Multitech MVP200 User Manual

Voice/fax over ip networks
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  • Page 1 Voice / Fax over IP Networks Voice/Fax Over IP Networks Model MVP200 User Guide...
  • Page 2 User Guide 88311800 Revision A MultiVOIP 200 (Model MVP200) 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 © 1999, by Multi-Tech Systems, Inc.

  • Page 3: Table Of Contents

    Contents Chapter 1 - Introduction and Description Introduction ..............................6 Preview of this Guide ..........................7 Typical Application ............................8 Front Panel Description ..........................11 Back Panel Description ..........................12 Power Connector ..........................12 Command Connector ......................... 12 10Base-T (Ethernet) Connector ......................12 Voice/Fax Channel 1 and 2 ........................
  • Page 4 Viewing Logs ............................54 Viewing Log Entry Details ........................54 Viewing Channel Totals ........................55 Reports ..............................56 Upgrade Procedures ..........................57 Download Firmware ........................... 57 Download Coders ..........................58 Chapter 5 - Remote Configuration and Management Introduction .............................. 60 Remote Configuration ..........................

  • Page 5: Chapter 1 - Introduction And Description

    Voice / Fax over IP Networks Chapter 1 - Introduction and Description...

  • Page 6: Introduction

    Internet connection. Once configured, the MultiVOIP then allows voice and fax to travel down the same path as your traditional data communications. The MVP200 is designed with two voice/fax channels (which offer three voice/fax interfaces on each channel), a 10 Mbps Ethernet LAN interface, and a command port for configuration. System management is provided through the command port using bundled Windows®...

  • Page 7: Preview Of This Guide

    Chapter 1 - Introduction and Description Preview of this Guide This guide describes the MultiVOIP and tells you how to install and configure the unit. The information contained in each chapter is as follows: Chapter 1 - Introduction and Description Chapter 1 describes the MultiVOIP.

  • Page 8: Typical Application

    MultiVOIP 200 User Guide Typical Application Before Voice Over IP (VOIP), voice over the Internet, a corporate office had a data connection to the Internet and a voice connection to the public telephone network. With VOIP, the two networks can be tied together.
  • Page 9 Chapter 1 - Introduction and Description If you want a user to be able to call into a facility and then use the local phone capability to dial out to the public phone network, you can choose either the FXO or E&M interface. If you chose the FXO interface, you can connect to the station side of your phone switch and be able to use all the features of your local phone system.
  • Page 10 MultiVOIP 200 User Guide Before you construct the phone directory database, you must establish the Master-Slave relationship between MultiVOIPs, which enables one multiVOIP (the “Master”) to control the database. The database defines each phone number that can be dialed on the VOIP network. Each phone number entry in the database identifies a phone connection.

  • Page 11: Front Panel Description

    Chapter 1 - Introduction and Description Front Panel Description The front panel has three groups of LEDs that provide the status of the Ethernet connection (Ethernet), Voice/Fax channels (Voice/Fax 1 and 2), and general status of the MultiVOIP (Boot and Power).

  • Page 12: Back Panel Description

    MultiVOIP 200 User Guide Back Panel Description The cable connections for the MultiVOIP are made at the back panel. Connectors include Power, Command Port (RS232), Ethernet (10BASE-T), Voice/Fax Channels 1 and 2 (E&M, FXO and FXS). The cable connectors are shown in Figure 1-5 and defined in the following groups. Figure 1-5.

  • Page 13: Specifications

    Chapter 1 - Introduction and Description Specifications • One 1 Meg by 32 byte at 70 nanosecond SIMM is 4 Mb DRAM Caution: SIMM speed and size cannot be mixed • Two Megs of flash memory Ethernet Port • Single Ethernet Interface - 10Base-T (twisted pair) keyed RJ-45 connector. Command Port •...
  • Page 14 MultiVOIP 200 User Guide...

  • Page 15: Chapter 2 - Installation

    Voice / Fax over IP Networks Chapter 2 - Installation...

  • Page 16: Installing Your Multivoip

    MultiVOIP 200 User Guide Installing Your MultiVOIP The basic steps of installing your MultiVOIP network involve unpacking the units, connecting the cables, and configuring the units using the included management software (MultiVOIP Configuration). The recommended installation process includes three phases that, when completed, result in a fully functional Voice Over IP network.

  • Page 17: Unpacking Your Multivoip

    Chapter 2 - Installation Unpacking Your MultiVOIP Remove all items from the box. (See Figure 2-1.) M A D U. S.A MA DE IN E IN U .S .A Figure 2-1. Unpacking Safety Warnings Caution: Danger of explosion if battery is incorrectly replaced. A lithium battery on the circuit board provides backup power for the time keeping capability.

  • Page 18: Cabling Your Multivoip

    MultiVOIP 200 User Guide Cabling Your MultiVOIP Cabling your MultiVOIP involves making the proper Power, Command Port, and Internet connections. Figure 2-2 shows the back panel connectors and the associated cable connections. The Cabling Procedure has step-by-step instructions for cabling your MultiVOIP. Power Connection Voice/Fax Channel 1 &...
  • Page 19 Chapter 2 - Installation Repeat the above step to connect the remaining telephone equipment to each Voice/Fax Channel on your MultiVOIP. Turn on power to the MultiVOIP by setting the power switch on the back panel to the 1 (up, On) position.

  • Page 20: E&M Jumper Block Positioning Procedure

    MultiVOIP 200 User Guide E&M Jumper Block Positioning Procedure Each voice/fax channel on the MultiVOIP has a separate E&M jumper block, located near the jacks on the back panel of the MultiVOIP. Each jumper block has 8 pairs of pins with a jumper plug on three adjacent pairs of pins. The jumper plug must be centered on the E&M type number (see Figure 2-3) that matches the E&M connection for that channel.

  • Page 21: Chapter 3 - Software Loading And Configuration

    Voice / Fax over IP Networks Chapter 3 - Software Loading and Configuration...

  • Page 22: Installing Your Multivoip Software

    MultiVOIP 200 User Guide Installing Your MultiVOIP Software The following installation procedures do not provide every screen or option in the process of installing the MultiVOIP software. It is assumed that a technical person with a thorough knowledge of Windows and the software loading process is doing the installation.
  • Page 23 Chapter 3 - Software Loading and Configuration Press Enter or click Next> to continue. Follow the on-screen instructions to install your MultiVOIP software. The following dialog box selects the COM port of your PC connected to the Command port of the MultiVOIP.
  • Page 24 MultiVOIP 200 User Guide The Setup Complete dialog is displayed. Click Finish to continue. The following message is displayed: Click Yes to continue. The following dialog box is displayed. Click YES to continue. The IP Protocol Default Setup dialog box is displayed. The default Frame Type is TYPE_II.
  • Page 25 Chapter 3 - Software Loading and Configuration In the Ethernet group, enter the IP Address, Subnet Mask, and Gateway Address, unique to your IP LAN, in the corresponding fields. The IP address is your unique LAN IP address, and the Gateway address is the IP address of the device connecting your MultiVOIP to the Internet.
  • Page 26 MultiVOIP 200 User Guide For FXO-to-FXO communications, you can enable a specific type of FXO Disconnect -- either current loss, tone detection, or silence detection. (Check with your in-house phone personnel to verify the preferred type of disconnect to use.) For tone detection, you can select from drop-down lists either one or two tones that will cause the line to be disconnected;...
  • Page 27 Chapter 3 - Software Loading and Configuration Note: Only change the DTMF gain under the direction of Multi-Tech Technical Support supervision. The Fax group enables you to send and receive faxes on the selected voice/fax channel. You can set the maximum baud rate for faxes in the drop-down list in the Fax group. If you do not plan to send or receive faxes on a given voice/fax channel, you can disable faxes in the Fax group.
  • Page 28 MultiVOIP 200 User Guide The Phone Directory Database dialog box is displayed. You will build your personalized MultiVOIP Phone Directory in the following steps. The MultiVOIP configured as a “Master” will contain the master database. The master data- base has the phone numbers of all the MultiVOIP’s available for communication on an IP network.
  • Page 29 Chapter 3 - Software Loading and Configuration In the MultiVOIP Identification group, enter the IP address of the Master MultiVOIP in the IP Address field. For example, 204.22.122.118. Then obtain the 12-digit Node ID# (0008005xxxxx) from the ID plate on the back panel of the MultiVOIP and enter this number in the Ethernet Node ID field.
  • Page 30 MultiVOIP 200 User Guide Enter the IP address of the remote MultiVOIP in the IP Address field in the MultiVOIP Identi- fication group. For example, 202.56.39.100. Click OK and you are returned to the Phone Directory Database dialog box, which now includes the second number and related information in the Phone Number list.
  • Page 31 Chapter 3 - Software Loading and Configuration The Checking MultiVOIP dialog box is displayed. Click OK to proceed. The Writing Setup dialog box is displayed as the setup configuration is written to the Multi- VOIP. After the setup is written to the MultiVOIP, the unit is rebooted. Check to ensure that the BOOT LED on the MultiVOIP is Off after the download is complete.

  • Page 32: Phase 2: Configure Your Slave Multivoips

    MultiVOIP 200 User Guide Phase 2: Configure Your Slave MultiVOIPs If you are installing a MultiVOIP behind a firewall, you need to add the following UDP ports to your firewall. Q.931 Signaling, Ch1 [900] Q.931 Signaling, Ch2 [902] Status [5000] Ch1 RTP [5004] Ch1 RTCP [5005] Ch2 RTP [5006]...
  • Page 33 Chapter 3 - Software Loading and Configuration The default Frame Type is TYPE_II. If this does not match your IP network, change the Frame Type by clicking on the drop-down arrow. The Frame Type choices are TYPE_II and SNAP. In the Port Address group, enter the IP Address and IP Mask. In the Gateway Address group, enter the gateway IP address for the slave unit.
  • Page 34 MultiVOIP 200 User Guide For FXO-to-FXO communications, you can enable a specific type of FXO Disconnect -- either current loss, tone detection, or silence detection (Check with your in-house phone person- nel to verify the preferred type of disconnect to use). For tone detection, you can select from drop-down lists either one or two tones that will cause the line to be disconnected;...
  • Page 35 Chapter 3 - Software Loading and Configuration If you selected the FXO interface and are using Touchtone dialing, you can set up the DTMF gain (or output level in decibels - dB) for the higher and lower frequency groups of the DTMF tone pair.
  • Page 36 MultiVOIP 200 User Guide In the Database Type group, click on the Slave option. The Update Database From group becomes active. Enter the IP address of the master MultiVOIP in the Master IP Address field. Click OK and you are returned to the main menu. Click Download Setup to write the new configuration to the slave unit.
  • Page 37 Chapter 3 - Software Loading and Configuration Check that the BTG LED on the MultiVOIP is Off after the download is complete. This may take several minutes as the MultiVOIP reboots. You are returned to the main menu. Your MultiVOIP is operational at this time. Repeat Phase 2 for each of the slave units.

  • Page 38: Phase 3: Deploy The Voip Network

    MultiVOIP 200 User Guide Phase 3: Deploy the VOIP Network Phase 3 involves the VOIP Administrator developing the VOIP Dialing Directory and deploying the pre-configured slave MultiVOIPs to their remote sites. The remote site administrators need only connect power to the pre-configured MultiVOIP, connect it to their Ethernet LAN and predefined telephone equipment, and then wait for the phone directory database to be downloaded.
  • Page 39 Chapter 3 - Software Loading and Configuration If you are connecting a station device (e.g., analog telephone, fax machine, or Key Telephone System (KTS) to your MultiVOIP, connect the smaller end of a special adapter cable (sup- plied) to the Voice/Fax Channel 1 FXS connector on the back of the MultiVOIP and the other end to the station device.
  • Page 40 MultiVOIP 200 User Guide...

  • Page 41: Chapter 4 - Multivoip Software

    Voice / Fax over IP Networks Chapter 4 - MultiVOIP Software...

  • Page 42: Introduction

    MultiVOIP 200 User Guide Introduction This chapter describes various features of the MultiVOIP software that enable you to change (update) the configuration of your MultiVOIP. The basic configuration parameters were established during the loading of the software (Chapter 3). The MultiVOIP software and configuration utilities described in this chapter enable you to change that initial configuration as necessary.

  • Page 43: Multivoip Configuration

    Chapter 4 - MultiVOIP Software 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, view statistics and call progress, and change features such as SNMP Agent, Telnet Server, WEB Server, and assign a MultiVOIP password.

  • Page 44: Changing Channel Parameters

    MultiVOIP 200 User Guide Changing Channel Parameters The channel parameters include the interface type and its options, voice and fax settings, and voice communications for the country and region in which the MultiVOIP is operating. The Channel Setup dialog box, accessed by clicking the Voice Channels button on the Setup men, has three tabs that display the following categories of channel information -- Interface, Voice/Fax, and Regional.

  • Page 45: Voice/Fax

    Chapter 4 - MultiVOIP Software 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.

  • Page 46: Regional

    -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).

  • Page 47: Changing The Phone Directory Database

    Chapter 4 - MultiVOIP Software 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.
  • Page 48 MultiVOIP 200 User Guide 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.

  • Page 49: Changing Ip Parameters

    Chapter 4 - MultiVOIP Software Changing IP Parameters The IP Setup dialog box establishes the IP addressing for the local Ethernet LAN, defines the Internet gateway address, and for a remote MultiVOIP the global-to-local IP address translation is defined on the Proxy Setup tab.

  • Page 50: Viewing Call Progress

    MultiVOIP 200 User Guide Viewing Call Progress The Call Progress dialog box displays the status of a call in progress. This dialog box is accessed from the MultiVOIP 200 Setup menu by clicking the Call Progress button. The ratio of Packets Lost versus Packets Received provides a general indication of the integrity of the Internet connection.

  • Page 51: Applications Setup

    Chapter 4 - MultiVOIP Software Applications Setup Clicking the Others button on the Setup menu displays the Applications Setup dialog box. This dialog box lets you to enable SNMP Agent (the default is disabled ) and set up all the necessary parameters;...

  • Page 52: Viewing Statistics

    MultiVOIP 200 User Guide 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 the Statistics button on the MultiVOIP 200 Setup 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 sent and received, etc.

  • Page 53: Snmp Statistics

    Chapter 4 - MultiVOIP Software 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.

  • Page 54: Viewing Logs

    MultiVOIP 200 User Guide Viewing Logs The Log Entries dialog box displays the a chronological history of all calls into and out of this unit. This dialog box is accessed from the Logs button on the Statistics dialog box. The Log Entries dialog box displays each call as a sequentially numbered Event with the date, time, duration of the call, the status of the call (Successful or Unsuccessful), Mode (Voice or Fax), and the from and to numbers.

  • Page 55: Viewing Channel Totals

    Chapter 4 - MultiVOIP Software Viewing Channel Totals The Channel Totals dialog box displays Outgoing and Incoming calls with their Attempted and Completed numbers for each channel on this MultiVOIP. The Total Connected Time for the channel is also displayed. This can provide you with a sense of successful call completions on each channel of the unit.

  • Page 56: Reports

    MultiVOIP 200 User Guide Reports A report of the contents of the Log Entries dialog box can be generated using the Windows Notepad accessory and then printed from your local PC. The report is generated by entering the To and From dates in the Report Generation dialog box and then clicking the Generate button.

  • Page 57: Upgrade Procedures

    Chapter 4 - MultiVOIP Software Upgrade Procedures Whenever you upgrade your version of the MultiVOIP software, you must first install the new software on your PC. Then, download the Firmware, the Factory Defaults, and/or the Voice Coders to upgrade the MultiVOIP itself. Before starting the upgrade process, view the current configuration and write down important data such as your IP address, phone book contents, and voice channel configurations;...

  • Page 58: Download Coders

    MultiVOIP 200 User Guide Download Coders If you have obtained a new coders file, do the following: Win3.1 users - In the Program Manager, double-click the Download Coders icon in the MultiVOIP 200 program group. The Open dialog box appears and the file list contains a single file, coders.hst. Win95/98/NT users - Click Programs | MultiVOIP 200 | Download Coders.

  • Page 59: Chapter 5 - Remote Configuration And Management

    Voice / Fax over IP Networks Chapter 5 - Remote Configuration and Management...

  • Page 60: Introduction

    MultiVOIP 200 User Guide Introduction This chapter provides procedures for viewing or changing the configuration of a remote unit. Two methods are provided to access a remote unit; the first method is modem based and the second method is using IP. Within the IP method, three applications can be used: 1) LAN-Based using TFTP (Trivial lFile Transfer Protocol), 2)Telnet as a client application, or 3) a standard web browser on the Internet.
  • Page 61 Chapter 5 - Remote Configuration and Management Verify that the Communication Type is set for COM Port and the Select Port field is set for the COM port of your local PC. In the Dial String field, enter the AT command for dialing (ATDT) plus the phone number of the remote MultiVOIP.

  • Page 62: Lan-Based

    MultiVOIP 200 User Guide LAN-Based The LAN-based remote configuration requires a Windows Sockets compliant TCP/IP stack. TCP/IP protocol software must be installed and functional before the configuration program can be used. You must assign an Internet (IP) address for the PC and for each node that will be managed by the configuration program.
  • Page 63 Chapter 5 - Remote Configuration and Management After you have changed the configuration of the remote MultiVOIP, click Download Setup to update the configuration. The remote MultiVOIP will be brought down, the new configuration written to the unit, and the unit will reboot. Click Exit when the downloading is complete.

  • Page 64: Remote Management

    MultiVOIP 200 User Guide Remote Management This section describes typical client applications that can be used to configure the MultiVOIP remotely. It is important to note that although any subsequent changes to configuration can be made using these applications, the initial setup and configuration of the MultiVOIP must be done on the local PC, using the MultiVOIP software provided with your unit.

  • Page 65: Web Management

    Chapter 5 - Remote Configuration and Management Voice over IP Configuration Selecting Option 1 displays the main menu, which allows further configuration options. These options include Protocol Stacks (option 1), Applications (option 2), System Information (option 3), and Voice Channels (option 4). For further descriptions of these options, refer to Chapter 4 - MultiVOIP Software.
  • Page 66 MultiVOIP 200 User Guide If a Password was entered in the Applications Setup dialog box, then enter the password and click on the Enter button. From this screen you can access all the configuration options. Refer to Chapter 4 - MultiVOIP Software, for a description of the various options.

  • Page 67: Chapter 6 - Warranty, Service And Tech Support

    Voice / Fax over IP Networks Chapter 6 - Warranty, Service and Tech Support...

  • Page 68: Introduction

    Defective products must be returned by Customer to MTS’s factory transportation prepaid. MTS WILL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGES AND UNDER NO CIRCUMSTANCES WILL ITS LIABILITY EXCEED THE PURCHASE PRICE FOR DEFECTIVE PRODUCTS. On-line Warranty Registration To register your MultiVOIP on-line, click the following link: http://www.multitech.com/register/...

  • Page 69: Service

    Chapter 6 - Warranty, Service and Tech Support Service If your tech support specialist decides that service is required, your MultiVOIP may be sent (freight prepaid) to our factory. Return shipping charges will be paid by Multi-Tech Systems. Include the following with your MultiVOIP: •...

  • Page 70: Tech Support

    MultiVOIP 200 User Guide Tech Support Multi-Tech has an excellent staff of technical support personnel available to help you get the most out of your Multi-Tech product. If you have any questions about the operation of this unit, call 1-800-972- 2439.

  • Page 71: The Multi-Tech Bbs

    Chapter 6 - Warranty, Service and Tech Support The Multi-Tech BBS For customers who do not have Internet access, Multi-Tech maintains a bulletin board system (BBS). Information available from the BBS includes new product information, product upgrade files, and problem-solving tips. The phone number for the Multi-Tech BBS is (800) 392-2432 (USA and Canada) or (612) 785-3702 (international and local).

  • Page 72: About The Internet

    DOWN key initiates the download.) About the Internet If you prefer to receive technical support via the Internet, you can contact Tech Support via e-mail at the following address: http://www.multitech.com\_forms\email_tech_support.htm Multi-Tech’s presence includes a Web site at: http://www.multitech.com and an ftp site at: ftp://ftp.multitech.com...

  • Page 73: Appendixes

    Voice / Fax over IP Networks Appendixes...

  • Page 74: Appendix A - Tcp/Ip (Transmission Control Protocol/Internet Protocol) Description

    First, choose a domain name for your company. A domain name is the unique Internet name, usually the name of your business, that identifies your company. For example, Multi-Tech’s domain name is multitech.com ( .com indicates this is a commercial organization; .edu denotes educational organizations, .gov denotes government organizations). Next, determine how many IP addresses you’ll need.
  • Page 75 Appendix A - TCP/IP Description response, are better suited to the datagram service of UDP because there is no time lost to virtual circuit establishment and termination. UDP’s primary function is to add a port number to the IP address to provide a socket for the application. The Application Layer protocols are examples of common TCP/IP applications and utilities, which include: •...
  • Page 76 You first choose a domain name for your company. A domain name is the unique Internet name, usually the name of your business, that identifies your company. For example, Multi-Tech’s domain name is multitech.com (where .com indicates this is a commercial organization; .edu denotes educational organizations, .gov denotes government organizations). Next, you determine how many IP addresses you’ll need.

  • Page 77: Appendix B - Cabling Diagrams

    Appendix B - Cabling Diagrams Appendix B - Cabling Diagrams Command Port Cable RJ-45 DB9F PIN NO. PIN NO. CLEAR TO SEND To DTE To Command Port Connector Device TRANSMIT DATA (e.g., PC) RECEIVE DATA SIGNAL GROUND LAN Cable Circuit Signal Name TD+ Data Transmit Positive TD- Data Transmit Negative RD+ Data Receive Positive...
  • Page 78 MultiVOIP 200 User Guide Remote Configuration Cable...

  • Page 79: Appendix C - Regulatory Information

    Appendix C - Regulatory Information Appendix C - Regulatory Information Class A Statement FCC Part 15 NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

  • Page 80: Canadian Limitations Notice

    7. No repairs are to be made by you. Repairs are to be made only by Multi-Tech Systems or its licensees. Unauthorized repairs void registration and warranty. Manufacturer: Multi-Tech Systems, Inc. Trade name: MultiVOIP Model Numbers: MVP200 FCC Registration Number: AU7USA-25715-DF-N Modular Jack (USOC): RJ-11C or RJ-11W Service Center in U.S.A.: Multi-Tech Systems Inc.

  • Page 81: Emc, Safety And Terminal Directive Compliance

    Appendix C - Regulatory Information EMC, Safety and Terminal Directive Compliance The CE mark is affixed to this product to confirm compliance with the following European Community Directives: Council Directive 89/336/EEC of 3 May 1989 on the approximation of the laws of Member States relating to electromagnetic compatibility.
  • Page 82 MultiVOIP 200 User Guide...

  • Page 83: Glossary

    Voice / Fax over IP Networks Glossary...
  • Page 84 MultiVOIP 200 User Guide Access: The T1 line element made up of two pairs of wire that the phone company brings to the customer premises. The Access portion ends with a connection at the local telco (LEC or RBOC). Accunet Spectrum of Digital Services (ASDS): The AT&T 56K bps leased (private) line service. Similar to services of MCI and Sprint. ASDS is available in n x56/64K bps, where n =1, 2, 4, 6, 8, 12.
  • Page 85 Glossary Bell Operating Companies (BOC): The family of corporations created during the divestiture of AT&T. BOCs are independent companies which service a specific region of the US. Also called Regional Bell Operating Companies (RBOCs). Bell Pub 41450: The Bell publication defining requirements for data format conversion, line conditioning, and termination for direct DDS connection.
  • Page 86 MultiVOIP 200 User Guide Circuit switching: The temporary connection of two or more communications channels using a fixed, non-shareable path through the network. Users have full use of the circuit until the connection is terminated. Clear Channel: A transmission path where the full bandwidth is used (i.e., no bandwidth needed for signaling, carrier framing or control bits).
  • Page 87 Glossary Digital Loopback: A technique used for testing the circuitry of a communications device. Can be initiated locally, or remotely (via a telecom- munications device). The tested device decodes and encodes a received test message, then echoes the message back. The results are compared with the original message to determine if corruption occurred en route.
  • Page 88 MultiVOIP 200 User Guide Failed Seconds: A test parameter where the circuit is unavailable for one full second. Failed Signal: A T1 test parameter logged when there are more than 9 SES (Severely Errored Seconds). Fax (facsimile): Refers to the bit-mapped rendition of a graphics-oriented document (fax) or to the electronic transmission of the image over phone lines (faxing).
  • Page 89 Glossary Hexadecimal: A base 16 numbering system used to represent binary values. Hex uses the numbers 0-9 and the letters A-F: usually notated by an "h" (e.g., "4CF h", read "four charley fox, hex"). The result is that one hex digit represents a 4-bit value. Implicit congestion management: A method of informing the terminal that the network is busy.
  • Page 90 MultiVOIP 200 User Guide Line Termination (LT): The electronics at the ISDN network side of the user/network interface that complements the NT1 at the user side. The LT and the NT1 together provide the high-speed digital line signals required for BRI access. Listed Directory Number (LDN): The main number assigned by the telco;...
  • Page 91 Glossary Network: A group of computers connected by cables or other means and using software that enables them to share equipment, such as printers and disk drives to exchange information. Node: Any point within a network which has been assigned an address. Object-Orientated: A method for structuring programs as hierarchically organized classes describing the data and operations of objects that may interact with other objects.
  • Page 92 MultiVOIP 200 User Guide Private Branch Exchange (PBX): A phone exchange located on the customer's premises. The PBX provides a circuit switching facility for phone extension lines within the building, and access to the public phone network. See also "Exchange". PROM (Programmable Read Only Memory - pronounced "prom"): A permanent memory chip that can be programmed or filled by the customer after by the manufacturer has set initial values.
  • Page 93 Glossary RS-422: The EIA standard for a balanced interface with no accompanying physical connector. RS-422 products can use screw terminals, DB-9, various DB-25, and DB-37 connectors. RS-530: The EIA standard for the mechanical/electrical interface between DCEs and DTEs transmitting synchronous or asynchronous serial binary data.
  • Page 94 MultiVOIP 200 User Guide T1 Channel Tests: A set of diagnostics that vary by carrier, used to verify a T1 channel operation. Can include Tone, Noise Level, Impulse Noise Level, Echo Cancellors, Gain, and Crosstalk testing. T1 Framing: To digitize and encode analog voice signals requires 8000 samples per second (twice the highest voice frequency of 4000 Hz).
  • Page 95 Glossary V.25bis: An ITU-T standard for synchronous communications between a mainframe or host and a modem using HDLC or other character- oriented protocol. V.54: The ITU-T standard for local and remote loopback tests in modems, DCEs and DTEs. The four basic tests are: •...
  • Page 96 MultiVOIP 200 User Guide...

  • Page 97: Index

    Glossary Index Multi-Tech Fax-Back Service ......72 On-line Warranty Registration ......68 Archie ............. 75 Ping ..............75 Back Panel ............. 12 POP ..............75 Power Connector ........... 12 Collision ............11 Proxy Server Configuration ...... 43, 65 Command Connector ........12 ProxyServer Software ........

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