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Multitech MVP200 User Giude

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Voice / Fax over IP Networks
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  • Page 1 Voice / Fax over IP Networks Voice/Fax Over IP Networks Model MVP200 Proprietary Mode User Guide...
  • Page 2 User Guide S000208B Revision B 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 © 2004, by Multi-Tech Systems, Inc.

  • Page 3: Table Of Contents

    Contents Chapter 1 - Introduction and Description ............. 5 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 .......................
  • Page 4 Viewing Logs ............................51 Viewing Log Entry Details ........................52 Viewing Channel Totals ........................52 Reports ..............................53 Upgrade Procedures ..........................54 One-Step Upgrade ..........................54 Manual Upgrade Procedure ....................... 56 Chapter 5 - Remote Configuration and Management ........ 57 Introduction ..............................

  • 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

    Chapter 1 - Introduction and Description 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 connected directly to your fax machine. In this situation, you would use the FXS interface which has two options: loop start and ground start. Loop start is generally the correct interface to use. 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.
  • Page 10 Chapter 1 - Introduction and Description database you can construct a VOIP phone book and a VOIP dialing directory. One phone directory database is all that is needed for a VOIP network. This database can be built at one site and then distributed to other sites.

  • 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

    Chapter 1 - Introduction and Description 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 Megabytes of flash memory Ethernet Port • Single Ethernet Interface - 10BASE-T (twisted pair) keyed RJ-45 connector. Command Port •...

  • Page 14: Chapter 2 - Installation

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

  • Page 15: Installing Your Multivoip

    Chapter 2 - Installation 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 16: Unpacking Your Multivoip

    Chapter 2 - Installation Unpacking Your MultiVOIP Remove all items from the box. (See Figure 2-1.) Voice/Fax over IP Networks 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 17: Cabling Your Multivoip

    Chapter 2 - Installation 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. Figure 2-2.
  • Page 18 Chapter 2 - Installation If you are connecting a station device such as an analog telephone, a fax machine, or a Key Telephone System (KTS) to your MultiVOIP, connect the smaller end of a special adapter cable (supplied) to the Voice/Fax Channel 1 FXS connector on the back of the MultiVOIP and the other end to the station device.

  • Page 19: E&M Jumper Block Positioning Procedure

    Chapter 2 - Installation 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.

  • Page 20: Chapter 3 - Software Loading And Configuration

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

  • Page 21: Installing Your Multivoip Software

    Insert the MultiVOIP 200 CD into your CD-ROM drive. The CD should start automatically. It may take 10 to 20 seconds for the MultiTech CD installation window to display. If the Multi-Tech Installation CD window does not display automatically, click My Computer, then right click the CD ROM drive icon, click Open, and then click the Autorun icon.
  • Page 22 Chapter 3 - Software Loading and Configuration The MultiVOIP Setup welcome window displays. 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 23 Chapter 3 - Software Loading and Configuration The Setup Complete dialog displays. Click Finish to continue. The following message displays: Click No to continue. The following dialog box displays. Click No to continue. In the v. 201E program group, double-click Upgrade Software. The following window displays.
  • Page 24 Chapter 3 - Software Loading and Configuration The IP Protocol Default Setup dialog box displays. The default Frame Type is TYPE_II. If this does not match your IP network, change the Frame Type by selecting SNAP from the Frame Type list. The available Frame Type choices are TYPE_II and SNAP.
  • Page 25 Chapter 3 - Software Loading and Configuration If the E&M interface is selected, the E&M Options group is enabled. Check with your in-house phone personnel to determine if the signaling is Dial Tone or Wink and if the connection is 2- wire or 4-wire.
  • Page 26 Chapter 3 - Software Loading and Configuration To change the voice coder, select the channel from the Select Channel list, then select the new voice coder entry from the Voice Coder list. If you changed the voice coder, ensure that the same voice coder is used on the voice/fax channel you are calling.
  • Page 27 Chapter 3 - Software Loading and Configuration The Billing/Security tab displays the parameters for automatic disconnection, billing options, and dialing options. You can set up billing options for inbound and outbound calls by selecting them in the Billing Options group and then entering the charge in cents per number of seconds. The Call Authentication option enables password protection for outbound and inbound calls on the selected voice/fax channel.
  • Page 28 Chapter 3 - Software Loading and Configuration From the Program Group, double-click MultiVOIP Configuration. Click Phone Book. The Phone Directory Database dialog box displays. You will build your personalized MultiVOIP Phone Directory in the following steps. The MultiVOIP configured as a “Host” will contain the host database. The host database 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 Host MultiVOIP in the IP Address box. 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 box.
  • Page 30 Chapter 3 - Software Loading and Configuration Enter the IP address of the client MultiVOIP in the IP Address box in the MultiVOIP Identifi- cation 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: Configuring Your Client Multivoips

    Chapter 3 - Software Loading and Configuration Configuring Your Client 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 32 Chapter 3 - Software Loading and Configuration Configure each channel for the type of interface you are connecting to. To change the chan- nel number, select the channel you want to configure from the Select Channel list. The Interface group defaults to FXS (Loop Start). Select the interface option to correspond to the interface type being connected to the Voice/Fax connector on the back panel of the MultiVOIP.
  • Page 33 Chapter 3 - Software Loading and Configuration Note: After configuring a given channel, you can copy that channel’s configuration to any other channel by clicking Copy. Everything on the Interface tab will be copied to the other channel. Repeat the above steps to configure the interface type for each voice/fax channel. The Voice/Fax tab displays the parameters for the voice coder, faxing, and DTMF gain.
  • Page 34 Chapter 3 - Software Loading and Configuration The Billing/Security tab displays the parameters for automatic disconnection, billing options, and dialing options. You can set up billing options for inbound and outbound calls by selecting them in the Billing Options group and then entering the charge in cents per number of seconds. The Call Authentication option enables password protection for outbound and inbound calls on the selected voice/fax channel.
  • Page 35 Chapter 3 - Software Loading and Configuration Click OK. After the upgrade is complete, click Start | Programs| MultiVOIP | MultiVOIP Configuration. On the main menu, click Phone Book to display the Phone Directory Data- base dialog box. In the Database Type group, click the Client option. The Update Database From group becomes active.

  • Page 36: Deploy The Voip Network

    Chapter 3 - Software Loading and Configuration Deploy the VOIP Network Deploying the VOIP network involves the VOIP Administrator developing the VOIP Dialing Directory and deploying the pre-configured client 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 37: Remote Site Administrator

    Chapter 3 - Software Loading and Configuration Remote Site Administrator Unpack your MultiVOIP. Connect one end of the power supply to a live AC outlet and connect the other end to the Power connection on your MultiVOIP. Voice/Fax Channel Connections 10BASET E&M FXO FXS ETHERNET...

  • Page 38: Chapter 4 - Multivoip Software

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

  • Page 39: Introduction

    Chapter 4 - MultiVOIP Software 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 40: Multivoip Configuration

    Chapter 4 - MultiVOIP Software MultiVOIP Configuration The MultiVOIP Setup menu enables 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 41: Changing Channel Parameters

    Chapter 4 - MultiVOIP Software 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 is accessed by clicking Voice Channels on the Setup menu. Interface The Interface tab defines the parameters related to the physical interface of the voice/fax channel.

  • Page 42: Voice/Fax

    Chapter 4 - MultiVOIP Software FXS Interface The FXS Interface is used to connect telephones, fax machines, key telephone systems, and so on, to the MultiVOIP. In addition, you need to select either Loop Start or Ground Start. Most of the equipment mentioned will use Loop Start which is the default.
  • Page 43 -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 44: Regional

    Chapter 4 - MultiVOIP Software The Authentication Option enables you to provide Password Protection on Inbound and/or Outbound calls on any of the three interfaces (FXO, FXS, and E&M). A password of up to 14 numeric characters can be assigned to either or both voice/fax channels. The required password must then be entered from the device initiating a call over the protected voice/fax channel.

  • Page 45: 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 Phone Book on the MultiVOIP Main menu.
  • Page 46 Chapter 4 - MultiVOIP Software client MultiVOIP will be defined as using Dynamic addressing and the IP Address box in the Identified By group will be unavailable. If a Proxy Server with a static IP address is in front of the client MultiVOIP, then the Identified By IP Address box must contain the address of the Proxy Server.

  • Page 47: 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 48: Viewing Call Progress

    Chapter 4 - MultiVOIP Software 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 Call Progress. The ratio of Packets Lost versus Packets Received provides a general indication of the integrity of the Internet connection.

  • Page 49: Viewing Statistics

    Chapter 4 - MultiVOIP Software The Password group enables you to enter a password, up to 13 alphanumeric characters, to be used for Internet Security. Once the password is entered (in the MultiVOIP Password box) and confirmed (in the Confirm Password box), remote users will be queried to enter the password before gaining access to the MultiVOIP.
  • Page 50 Chapter 4 - MultiVOIP Software Control Protocol (TCP) is a connection-oriented transport layer protocol used with FTP, Telnet, and SNMP. UDP makes use of the port concept and has no measures for flow control, reliability, or error recovery. It is used when the full services of TCP are not required, and the reliability measures must be assumed by another layer.

  • Page 51: Snmp Statistics

    Chapter 4 - MultiVOIP Software SNMP Statistics The SNMP Statistics dialog box provides statistical information on Simple Network Management Protocol (SNMP). SNMP is an application layer protocol that facilitates the exchange of management information between network devices. There are three key components in SNMP: the devices that are to be managed, agents, and the network management systems.

  • Page 52: Viewing Log Entry Details

    Chapter 4 - MultiVOIP Software Viewing Log Entry Details The Log Entry Details dialog box displays the status of a completed call. This dialog box displays the same details as the Call Progress dialog box after a call is completed. 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.

  • Page 53: Reports

    Chapter 4 - MultiVOIP Software 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 Generate.

  • Page 54: 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 the Voice Coders to upgrade the MultiVOIP. 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 55 Chapter 4 - MultiVOIP Software Enter your current configuration in the Channel Setup dialog box. Click OK when finished. Click OK. The MultiVOIP firmware and coders download, then the MultiVOIP reboots.

  • Page 56: Manual Upgrade Procedure

    Chapter 4 - MultiVOIP Software Manual Upgrade Procedure Use this procedure only if you want to manually upgrade your MultiVOIP. Note: Steps 4-8 can be performed via the command port or over IP. Run MultiVOIP Configuration from your old version of the MultiVOIP software. Note the current settings.

  • Page 57: Chapter 5 - Remote Configuration And Management

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

  • Page 58: Introduction

    Chapter 5 - Remote Configuration and Management 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.
  • Page 59 Chapter 5 - Remote Configuration and Management Verify that the Communication Type is set for COM Port and the Select Port box is set for the COM port of your local PC. In the Dial String box, enter the AT command for dialing (ATDT) plus the phone number of the remote MultiVOIP.

  • Page 60: Lan-Based

    Chapter 5 - Remote Configuration and Management 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 61 Chapter 5 - Remote Configuration and Management The MultiVOIP 200 Setup dialog box displays. This is the dialog box of the remote MultiVOIP. Refer to the online Help provided with your MultiVOIP for the definition of each dialog box. After you have changed the configuration of the remote MultiVOIP, click Download Setup to update the configuration.

  • Page 62: Remote Management

    Chapter 5 - Remote Configuration and Management 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 63 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 64: Web Management

    Chapter 5 - Remote Configuration and Management Web Management The MultiVOIP can be accessed, using a standard Web browser, from anywhere on the connected Internet. In order to provide this support, select the WEB Server check box in the Applications Setup dialog box (see Chapter 4, MultiVOIP Software).

  • Page 65: Chapter 6 - Warranty, Service And Tech Support

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

  • Page 66: 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. Online Warranty Registration To register your MultiVOIP online, click the following link: http://www.multitech.com/register/...

  • Page 67: Service

    Technical Support department nearest you, as listed at http:// www.multitech.com/COMPANY/offices/DEFAULT.ASP ., or e-mail tsupport@multitech.com . When calling the U.S., please direct questions regarding repair expediting, receiving, shipping, billing, etc., to our Repair Accounting department at +763 717-5631 in the U.S.A., or e-mail mtsrepair@multitech.com .

  • Page 68: Tech Support

    LED indicators, screen messages, diagnostic test results, problems with a specific application, etc. Internet Sites Multi-Tech is a commercial provider on the Internet. Multi-Tech has a Web site at http://www.multitech.com and an ftp site at ftp://ftp.multitech.com...

  • Page 69: Appendixes

    Voice / Fax over IP Networks Appendixes...

  • Page 70: 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 71 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 72 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 73: Appendix B - Cabling Diagrams

    Appendix B - Cabling Diagrams Appendix B - Cabling Diagrams Command Port Cable LAN Cable Circuit Signal Name TD+ Data Transmit Positive TD- Data Transmit Negative RD+ Data Receive Positive RD- Data Receive Negative Voice/Fax Channel Connectors Pin Connections E&M Description Description Description...
  • Page 74 Appendix B - Cabling Diagrams Remote Configuration Cable...

  • Page 75: 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 76 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 77: Canadian Limitations Notice

    Appendix C - Regulatory Information Canadian Limitations Notice Ringer Equivalence Number Notice: The ringer equivalence number (REN) assigned to each terminal device provides an indication of the maximum number of terminals allowed to be connected to a phone interface. The termination on an interface may consist of any combination of devices subject only to the requirement that the sum of the ringer equivalence numbers of all the devices does not exceed 5.

  • Page 78: Glossary

    Voice / Fax over IP Networks Glossary...
  • Page 79 Glossary 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 80 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 81 Glossary 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 (no bandwidth needed for signaling, carrier framing or control bits). A 64K bps digital circuit usually has 8K bps used for signaling.
  • Page 82 Glossary Digital Loopback: A technique used for testing the circuitry of a communications device. Can be initiated locally, or remotely (via a telecommunications 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 83 Glossary 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 84 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" (for exxample, "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 85 Glossary 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; the number listed in the phone directory and also provided by Directory Assistance.
  • Page 86 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 87 Glossary 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 88 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 89 Glossary 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). Encoding in an 8-bit word provides the basic T1 block of 64K bps for voice transmission.
  • Page 90 Glossary...

  • Page 91: Index

    Glossary Index Multi-Tech Fax-Back Service ......68 On-line Warranty Registration ......66 Archie ............. 71 Ping ..............71 Back Panel ............. 12 POP ..............71 Power Connector ........... 12 Collision ............11 Proxy Server Configuration ...... 40, 64 Command Connector ........12 ProxyServer Software ........

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Multivoip 200

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