Multitech MultiVOIP MVP 800 User Manual
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Multitech MultiVOIP MVP 800 User Manual

Standalone voice/ip gateway
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Standalone Voice/IP Gateway
Model MVP 800
Proprietary Mode
User Guide

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  • Page 1 Standalone Voice/IP Gateway Model MVP 800 Proprietary Mode User Guide...
  • Page 2 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.

  • Page 3: Table Of Contents

    Chapter 1 - Introduction and Description Introduction ... 6 Preview of this Guide ... 6 MultiVOIP Application ... 8 Front Panel Description ... 11 Back Panel Description ... 12 Power Connector ... 12 Command Port Connector ... 12 10Base-T (Ethernet) Connector ... 12 Voice/Fax Channel ...
  • Page 4 Viewing Call Progress ... 52 Viewing Logs ... 53 Viewing Log Entry Details ... 53 Viewing Channel Totals ... 54 Reports ... 54 Chapter 5 - Remote Configuration and Management Introduction ... 56 Remote Configuration ... 56 Modem-Based ... 56 LAN-Based ...

  • Page 5: Chapter 1 - Introduction And Description

    Chapter 1 - Introduction and Description...

  • Page 6: Introduction

    Introduction Welcome to Multi-Tech's new standalone Voice/IP Gateway which allows analog voice and fax communication over an IP network. Multi-Tech’s new voice/fax over IP gateway technology allows voice and fax communication to ride, with no additional expense, over your existing IP network, which has traditionally been data-only.
  • Page 7 Chapter 5 - Remote Configuration and Management Chapter 5 provides procedures for changing the configuration of a remote MultiVOIP. Remote configuration allows you to change the configuration of a unit by simply connecting two modems between the two MultiVOIPs and remotely controlling the unit. Chapter 5 also describes typical client applications such as Telnet and Web-based management, which are used for remote configuration of the MultiVOIP.

  • Page 8: Multivoip Application

    Internet or your Intranet. The headquarters site is set up with a 8-channel MultiVOIP (MVP 800) connected to the headquarters LAN and eight voice/fax channels connected to the in- house telephone switch (PBX), only 4-channels are shown in Figure 1-2. Typically, the MultiVOIP at the headquarters site would be set up as the host unit.
  • Page 9 Phone Directory Data Base Number Description Headquarters Trunk Ext 4 Headquarters Trunk Ext 5 Headquarters Trunk Ext 6 Headquarters Trunk Ext 7 Sales KTS 201 Sales PSTN 202 Regional Regional Marketing Trunk Ext 9 Marketing Trunk Ext 10 From the phone directory data base you can build your VOIP dialing directory. For example, if a person in our typical VOIP network at the headquarters picked up a telephone (for example extension 4123) and wanted to talk to some one at the Sales office, they would dial one of the four headquarters extension numbers (4, 5, 6, or 7).
  • Page 10 Using the same example as above, but calling the Regional office. A person at headquarters would pick up a telephone and dial say trunk extension 5. This connects channel 2 of the headquarters MultiVOIP. A second dial tone is heard, then you would dial, for example, 301. The telephone connected to channel 1 of the Regional office MultiVOIP rings and your voice conservation takes place.

  • Page 11: Front Panel Description

    Front Panel Description The front panel contains three groups of LEDs that provide the status of the Ethernet connection, Voice/Fax channels, and general status of the MultiVOIP. The front panel is shown in Figure 1-3, and a description of each LED follows. Figure 1-3.

  • Page 12: Back Panel Description

    PBX. This connector is an RJ-11 jack. FXS - This connector is used if you are connecting VOICE/FAX CHANNEL _ to a station device, etc., an analog telephone, KTS telephone system, or fax machine. This connector is an RJ-11 jack.

  • Page 13: Specifications

    Specifications • Two 1 Meg by 32 byte at 70 nanosecond SIMM is 8 Mb DRAM Caution: SIMM speed and size cannot be mixed • Two Meg of flash memory Ethernet Port • Single Ethernet Interface - 10BASE-T (twisted pair) keyed RJ-45 connector. Command Port •...

  • Page 14: Chapter 2 - Installation

    Chapter 2 - Installation...

  • Page 15: Installing Your Multivoip

    Next, the administrator configures the MultiVOIPs designated as “Client” units. The Client units can be another MVP 800 or MVP 400 unit or a MultiVOIP 200 series. Again, unique LAN IP addresses, subnetwork masks, and Gateway IP addresses are assigned, and each Voice/Fax channel is configured for the appropriate channel interface type.

  • Page 16: Unpacking Your Multivoip

    Unpacking Your MultiVOIP Remove all items from the box. Figure 2-1. Unpacking Safety Warnings A lithium battery on the voice/fax channel board provides backup power for the time keeping capability. The battery has an estimated life expectancy of ten years. When the battery starts to weaken, the date and time may be incorrect.

  • Page 17: Cabling Procedure

    Connect the other end of the cable to your network. 5. 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 one end of an RJ11 phone cord to the Voice/Fax Channel 1 FXS connector on the back of the MultiVOIP and the other end to the station device.

  • Page 18: E&M Jumper Block Positioning Procedure

    E&M Jumper Block Positioning Procedure A jumper block exists for each voice/fax channel. The jumper block is to the right of each set of channel jacks. The jumper block contains 8-pairs of pins. The jumper plug fits over three pairs of pins on the jumper block.

  • Page 19: Chapter 3 - Software Loading And Configuration

    Chapter 3 - Software Loading and Configuration...

  • Page 20: Configuring Your Host Multivoip

    Configuring Your Host MultiVOIP The following software loading procedure does not provide every screen or option in the loading process. The assumption is that a technical person with a thorough knowledge of Windows and the software loading process is doing the installation. If you are installing a MultiVOIP behind a firewall, add the following UDP ports to your firewall.
  • Page 21 4. The Welcome dialog box displays. Click Next to continue. 5. Follow the on-screen instructions to install your MultiVOIP software. You may choose the Destination Location of your MultiVOIP software or you can accept the default destination by clicking Next. If you click Browse, you can choose from several folders. Accepting the default destination is recommended.
  • Page 22 Voice/Fax connector on the back panel of the MultiVOIP. If you are connecting a station device such as an analog telephone, a fax machine, or a Key Telephone System (KTS) to the Voice/Fax connector on the back of the unit, FXS (Loop Start) will most likely be the correct Interface option most of the time.
  • Page 23 Chapter 3 - Software Loading and Configuration device’s user documentation. If you are using an extension from your PBX, then choose the FXO option. Check with your in- house telephone personnel to verify connection type. If you are connecting to an E&M trunk on your PBX, then choose E&M option. If the E&M interface is selected, the E&M Options group is enabled.
  • Page 24 14. 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 25 18. The Billing/Security tab displays the parameters for automatic disconnection, billing options, and dialing options. 19. 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. 20.
  • Page 26 24. 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. This database is downloaded to each Client MultiVOIP as it comes online.
  • Page 27 28. 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 28 34. 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. Note: If only Channel 1 is active, you must enter two phone numbers. The first number will be the local MultiVOIP phone number for Channel 1, and the second number will be the client MultiVOIP phone number for Channel 1.

  • Page 29: Configuring Your Client Multivoips

    Configuring Your Client MultiVOIPs The client MultiVOIPs can be another MVP 800, MVP 400 unit or a MultiVOIP 200-series. If your client MultiVOIP is an MVP 800, perform the following software loading procedure. If you client is a MVP 400, connect your command port cable and power up the unit according to the cabling procedure in the MultiVOIP 400 Quick Start.
  • Page 30 Voice/Fax connector on the back panel of the MultiVOIP. If you are connecting a station device such as an analog telephone, a fax machine, or a Key Telephone System (KTS) to the Voice/Fax connector on the back of the unit, FXS (Loop Start) will likely be the correct Interface option most of the time.
  • Page 31 much time elapses between digits and the wrong numbers are mapped, you hear a rapid busy signal. If this happens, hang up and dial again. This option is available for all interface types. In the Flash Timer box, enter the time, in milliseconds, for the duration of flash hook signals output on the FXO or FXS interface.
  • Page 32 11. You can enable the voice/fax advanced features by selecting the Silence Compression, Echo Cancellation, or Forward Error Correction check boxes. The Silence Compression check box defines whether silence compression is enabled for this voice channel. If silence compression is enabled, the MultiVOIP 800 will not transmit voice packets when silence is detected, thereby reducing the amount of network bandwidth that is being used by the voice channel.
  • Page 33 16. To change the Tone Pairs on the Regional tab, select your specific country or region from the Country/Region list. The Tone Pairs group parameters change per your selections. Click OK. 17. The following dialog box displays. Click OK to download setup. 18.
  • Page 34 20. Click OK and you are returned to the main menu. 21. Click Download Setup to write the new configuration to the client unit. The Save Setup dialog displays. 22. Select the Save Current Setup as User Default Configuration check box, then click OK. After the setup is written to the MultiVOIP, the unit reboots.

  • Page 35: Deploy The Voip Network

    LAN and predefined telephone equipment, and then wait for the phone directory database to be downloaded. The client units can be another MVP 800 or MVP 400 unit or a MultiVOIP 200-series. Therefore, the deployment procedure for the remote site administrator may be more general, so you may need to refer to the Cable Connection Figure in the Quick Start Guide.
  • Page 36 If you are connecting the station side of a telephone switch (PBX) to your MultiVOIP, connect one end of an RJ11 phone cord to the Voice/Fax Channel 1 FXO connector on the back of the MultiVOIP and the other end to the phone jack. If you are connecting an E&M trunk from a telephone switch to your MultiVOIP, connect one end of an RJ45 phone cord to the Voice/Fax Channel 1 E&M connector on the back of the MultiVOIP and the other end to the trunk.

  • Page 37: Chapter 4 - Multivoip Software

    Chapter 4 - MultiVOIP Software...

  • Page 38: Introduction

    Chapter 4 - MultiVOIP Software Introduction This chapter describes the MultiVOIP software to show you how to make changes to the configuration of your MultiVOIP. The major configuration parameters were established during the loading of the software (Chapter 3), and the MultiVOIP software and configuration utilities allow you to make changes to that initial configuration.

  • Page 39: 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, define the output of the MultiVOIP, view statistics and call progress, and change features such as SNMP Agent, Telnet Server, WEB Server, and assign a MultiVOIP password.

  • Page 40: Changing Channel Parameters

    Chapter 4 - MultiVOIP Software Changing Channel Parameters The channel parameters include the interface type and its options, voice and fax settings, billing and security options, and voice communications for the region of the world that the MultiVOIP resides in. The Channel Setup dialog box is accessed from the Main menu.

  • Page 41: Fxo Interface

    Chapter 4 - MultiVOIP Software the dialed digits to an entry in the Phone Directory Database. If too much time elapses between digits, the wrong number maybe mapped, you may hear a rapid busy signal. If this happens, hang up and dial again.

  • Page 42: Voice/Fax Tab

    Otherwise, you will always get a Busy signal. The Fax group enables a fax machine to transmit and receive faxes through the MultiVOIP. If a fax machine is connected to one of the voice/fax channels, the Max Baud Rate should be set to match the baud rate of the fax machine.
  • Page 43 Chapter 4 - MultiVOIP Software the voice channel. Billing/Security 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). The amount to be charged in cents is entered in the Charge ( ) Cents box together with the associated time duration in the Per ( )Seconds box.

  • Page 44: Regional Tab

    Chapter 4 - MultiVOIP Software Regional Tab The Regional tab controls the voice communications for the country or region in which the MultiVOIP is being used. From the Country/Region list, you can select the country or region for which you are configuring the MultiVOIP.

  • 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 will be unavailable. If a Proxy Server with a static IP address is in front of the client MultiVOIP, then the 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 if a proxy server is used to connect a LAN to the Internet, global-to-local IP address translation is required.
  • Page 48 Chapter 4 - MultiVOIP Software MultiVOIP located behind a Proxy Server at the static IP address. This static IP address will be used in the Phone Directory Database when assigning directory numbers to this MultiVOIP. The Global IP Address box must contain the static IP address of the WAN port of the Proxy Server. The Local IP Address box must contain the local IP address of the MultiVOIP.

  • Page 49: Viewing Statistics

    Chapter 4 - MultiVOIP Software 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 on the Statistics button on the Main MultiVOIP 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 send and received, and so on.

  • Page 50: Snmp Statistics

    Chapter 4 - MultiVOIP Software For the most part these statistics are informational, and their use as a troubleshooting tool will be contingent on the applications running in the upper layers. For example, if you were having problems connecting to the MultiVOIP’s web server, you would look under the TCP section to see if any connections are being established.

  • Page 51: Others Setup

    Chapter 4 - MultiVOIP Software Others Setup Clicking Others on the Main menu displays the Others Setup dialog box. This dialog box lets you to enable SNMP Agent (the default is disabled) and set up all the necessary parameters; enable or disable various remote configuration methods such as TFTP (Trivial File Transfer Protocol) Server, Web Server, Dumb Terminal, and Telnet Server;...

  • Page 52: 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 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 53: Viewing Logs

    Chapter 4 - MultiVOIP Software Viewing Logs The Log Entries dialog box displays a chronological history of all calls into and out of this unit. Click Logs in the Statistics dialog box to open this 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 54: 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 55: Chapter 5 - Remote Configuration And Management

    Chapter 5 - Remote Configuration and Management...

  • Page 56: Introduction

    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 57 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 58: Lan-Based

    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 59 The MultiVOIP Setup dialog box displays. This is the dialog box of the remote MultiVOIP. 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.

  • Page 60: 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 61: 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 62 Chapter 5 - Remote Configuration and Management If a Password was entered in the Applications Setup dialog box, then enter the password and click Enter. From here, you can access all the configuration options. Refer to Chapter 4 - MultiVOIP Software, for a description of the various options.

  • Page 63: Upgrade Procedures

    Chapter 5 - Remote Configuration and Management Upgrade Procedures Whenever you upgrade your version of the MultiVOIP 400/800 software, you must first install the new software on your PC. Then, download the Firmware, Factory Defaults, and Voice Coders, to upgrade the MultiVOIP 400/800.

  • Page 64: Manual Upgrade Procedure

    Chapter 5 - Remote Configuration and Management The MultiVOIP firmware and coders download, then the MultiVOIP reboots. Manual Upgrade Procedure...
  • Page 65 Follow this procedure only if you want to manually upgrade your MultiVOIP. Note: Steps 4-8 can be performed locally via the command port or IP. 1. Run “MultiVOIP configuration” from your old version of MultiVOIP software. Note the current settings. Your MultiVOIP will be reset to factory defaults during this upgrade. 2.

  • Page 66: Chapter 6 - Warranty, Service, And Tech Support

    Chapter 6 - Warranty, Service, and Tech Support...

  • Page 67: Introduction

    Internet. Limited Warranty Multi-Tech Systems, Inc. (“MTS”) warrants that its products will be free from defects in material or workmanship for a period of two years from the date of purchase, or if proof of purchase is not provided, two years from date of shipment.

  • Page 68: Tech Support

    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. Please fill out the MultiVOIP information (below), and have it available when you call. If your MultiVOIP requires service, the tech support specialist will guide you on how to send in your MultiVOIP (refer to the next section).

  • Page 69: Service

    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: • a description of the problem •...

  • Page 70: Appendixes

    Appendixes...

  • Page 71: Appendix A - Tcp/Ip (Transmission Control Protocol/Internet Protocol) Description

    Appendix A - TCP/IP (Transmission Control Protocol/Inter- net Protocol) Description TCP/IP is a protocol suite and related applications developed for the U.S. Department of Defense in the 1970s and 1980s specifically to permit different types of computers to communicate and exchange information with one another.
  • Page 72 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 73: Internet Protocol (Ip)

    Appendix B - Cabling Diagrams Internet Protocol (IP) IP is the Internet standard protocol that tracks Internetwork node addresses, routes outgoing messages and recognizes incoming messages, allowing a message to cross multiple networks on the way to its final destination. The IPv6 Control Protocol (IPV6CP) is responsible for configuring, enabling, and disabling the IPv6 protocol modules on both ends of the point-to-point link.

  • Page 74: 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 21 20 Description Ring Appendix B - Cabling Diagrams Description Ring...
  • Page 75 Appendix B - Cabling Diagrams Magix 400 E&M Tie Card...

  • Page 76: 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 77: Fcc Part 68 Telecom

    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.

  • Page 78: 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 79: Glossary

    Glossary...
  • Page 80 Glossary Access: The T1 line element made up of two pairs of wire that the telephone 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 nx56/64K bps, where n=1, 2, 4, 6, 8, 12.
  • Page 81 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 82 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 83 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 84 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 telephone lines (faxing).
  • Page 85 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 example, "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 86 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 telephone directory and also provided by Directory Assistance.
  • Page 87 Glossary Object-Orientated: A method for structuring programs as hierarchically organized classes describing the data and operations of objects that may interact with other objects. Office Channel Unit - Data Port (OCU-DP): The CO channel bank used as the interface between the customer's DSU and the channel bank. Off-hook: The condition of a device that has accessed a phone line, with or without using the line.
  • Page 88 Glossary Protocol: 1) A set of semantic and syntactic rules that determines the behavior of functional units in achieving communication. 2) In Open Systems Interconnection architecture, a set of semantic and syntactic rules that determine the behavior of entities in the same layer in performing communication functions.
  • Page 89 Glossary Serial Port: The connector on a PC used to attach serial devices (those that need to receive data one bit after another), such as a mouse, a printer or a modem. This consists of a 9- or 25-pin connector that sends data in sequence (bit by bit). Serial ports are referred to as "COMx" ports, where x is 1 to 4 (COM1 through COM4).
  • Page 90 Glossary 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. This "Level 0 Signal, as its called, is represented by "DS-0", or Digital Signal at Level 0.
  • Page 91 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 92: Index

    Index Archie ... 73 Back Panel ... 12 Call progress, viewing ... 54 Channel totals, viewing ... 55 Command Connector ... 12 Configuration Port Setup ... 39 Configuration Utilities ... 39 Connectors Command ... 12 Power ... 12 DNS ... 73 Download Firmware ...

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