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ZyXEL Communications Omni 56K USB Lite User Manual

ZyXEL Communications Omni 56K USB Lite User Manual

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Omni 56K USB Lite
User's Guide
February 2002

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Summary of Contents for ZyXEL Communications Omni 56K USB Lite

  • Page 1 Omni 56K USB Lite User’s Guide February 2002...
  • Page 2 ZyXEL Communications Corporation. Published by ZyXEL Communications Corporation. All rights reserved. Disclaimer ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein.

  • Page 3: Zyxel Limited Warranty

    Omni 56K USB Lite ZyXEL Limited Warranty ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials or workmanship for a period of up to two (2) years from the date of purchase. During the warranty period and...

  • Page 4: Information For Canadian Users

    Omni 56K USB Lite Information for Canadian Users The Industry Canada label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective operation and safety requirements. The Industry Canada does not guarantee that the equipment will operate to a user's satisfaction.
  • Page 5 Omni 56K USB Lite Federal Communications Commission (FCC) Interference Statement This device complies with Part 15 of FCC rules. Operation is subject to the following two conditions: This device may not cause harmful interference. This device must accept any interference received, including interference that may cause undesired operations.

  • Page 6: Customer Support

    Omni 56K USB Lite Customer Support Please have the following information ready when you contact customer support. ♦ Product model and serial number. ♦ Warranty Information. ♦ Date you received your Product. ♦ Brief description of the problem and the steps you took to solve it.

  • Page 7: Table Of Contents

    Chapter 2 Installation..........................2-1 Panel Description ........................... 2-1 2.1.1 Front Panel LEDs........................2-1 2.1.2 Back Panel..........................2-1 Connecting Your Omni 56K USB Lite ..................2-2 2.2.1 USB Connector ........................2-2 Software Installation ........................2-2 2.3.1 Installation Wizard ......................... 2-3 2.3.2 Windows 98 ...........................
  • Page 8 Omni 56K USB Lite 3.3.3 Voice Function........................3-9 Chapter 4 Result Codes..........................4-1 Result Codes ...........................4-1 Chapter 5 Command Sets ..........................5-1 Data Command Sets........................5-1 5.1.1 Basic AT Command Sets ......................5-1 5.1.2 Extended AT& Command Sets....................5-4 5.1.3 Extended AT* Command Sets....................5-8 5.1.4 Extended AT# Command Sets....................5-9 Fax Command Sets .........................5-9...

  • Page 9: List Of Figures

    Omni 56K USB Lite List of Figures Figure 2-1 Back Panel............................ 2-1 Figure 2-2 Connections..........................2-2 Figure 2-3 Windows 98 Search for Driver..................... 2-3 Figure 2-4 Windows 98 Select Driver ......................2-4 Figure 2-5 Windows 98 Other Driver ......................2-5 Figure 2-6 Windows 98 Select Country Driver Screen..................
  • Page 10 Omni 56K USB Lite List of Tables Table 2-1 Front Panel LEDs for Omni 56K USB Lite..................2-1 Table 2-2 Back Panel Description ........................2-2 Table 3-1 Hardware Specifications.........................3-1 Table 3-2 Firmware Specifications.........................3-1 Table 3-3 Data/Fax/Voice Feature Description ....................3-4 Table 3-4 Physical Layer Capacity .........................3-4 Table 3-5 Different Ring Types in Register S40 ....................3-8...

  • Page 11: Preface

    CI Commands as well as bundled software. Quick Start Guide Our Quick Start Guide is designed to help you get your Omni 56K USB Lite up and running right away. It contains a detailed easy-to-follow connection diagram, Omni 56K USB Lite default settings, handy checklists, information on installing your Omni 56K USB Lite for Internet access.
  • Page 12 • Window and command choices are in Bold Times font. The Omni 56K USB Lite may be referred to as the Omni, the Omni 56K, the Omni 56K USB or the USB modem in this manual. USB (Universal Serial Bus) is a data communications standard that allows your to computer recognize (auto- detect) new devices.

  • Page 13: Chapter 1 Introduction

    Omni 56K USB Lite Chapter 1 Introduction This chapter introduces you to the features and specifications for the ZyXEL Omni 56K USB Lite, and provides instructions for installing your modem. Main Features ZyDAS ZD1051 data pump with controllerless V.90 capability.

  • Page 15: Chapter 2 Installation

    Chapter 2 Installation Panel Description 2.1.1 Front Panel LEDs The description of front panel LEDs is as follows: Table 2-1 Front Panel LEDs for Omni 56K USB Lite FUNCTION DESCRIPTION USB Indicator ON: USB link is up OFF: USB link is down...

  • Page 16: Connecting Your Omni 56K Usb Lite

    Software Installation When you connect your Omni 56K USB Lite to the USB port of your computer, the Windows Plug and Play function of the operating system detects if its driver has been installed. If the driver has not been installed, Windows starts an installation wizard.

  • Page 17: Installation Wizard

    Omni 56K USB Lite 2.3.1 Installation Wizard You need to go through the installation wizard more than once in Windows 2000 and XP. Specify your country specific driver in the second configuration of the installation wizard for both Windows 2000 and XP.

  • Page 18: Figure 2-4 Windows 98 Select Driver

    Omni 56K USB Lite Step 3. Select Specify a location. Click Browse, select D:\Drivers\O56ULite\W98 and click Next. Figure 2-4 Windows 98 Select Driver Installation...

  • Page 19: Figure 2-5 Windows 98 Other Driver

    Omni 56K USB Lite Step 4. Select the “One of the other drivers.” radio button and click View List. Figure 2-5 Windows 98 Other Driver Step 5. Select the driver for the country you are in (you may need to scroll down) and click OK.

  • Page 20: Figure 2-7 Windows 98 Country Driver Selected

    Omni 56K USB Lite Step 6. Click Next. Figure 2-7 Windows 98 Country Driver Selected Step 7. Click Next in the screen that follows to have Windows copy the driver files into your system and build the driver information database.

  • Page 21: Windows 2000

    Omni 56K USB Lite 2.3.3 Windows 2000 Step 1. Make sure the included CD is in your CD-ROM drive and click Next in the first screen. Step 2. Click Next to accept the default selection. Figure 2-8 Windows 2000 Search for Driver...

  • Page 22: Figure 2-9 Windows 2000 Specify A Location

    Omni 56K USB Lite Step 3. Select Specify a location and click Next. Figure 2-9 Windows 2000 Specify a Location Step 4. Click Browse and select D:\Drivers\O56ULite\W2K and click OK. Figure 2-10 Windows 2000 Select Driver Installation...

  • Page 23: Figure 2-11 Windows 2000 Select Location

    Omni 56K USB Lite Step 5. Click Next in the screen that follows to have Windows copy the driver files into your system and build the driver information database. Figure 2-11 Windows 2000 Select Location Installation...

  • Page 24: Figure 2-12 Windows 2000 Other Driver

    Omni 56K USB Lite Step 6. In Windows 2000, you go through the installation wizard more than once. Use the default driver for the first configuration (it is the only available choice). Select the “Install one of the other drivers” checkbox during the second configuration of the installation wizard and click Next.

  • Page 25: Figure 2-13 Windows 2000 Select Country Driver Screen

    Omni 56K USB Lite Step 7. Select the driver for the country you are in (you may need to scroll down) and click Next. Windows copies the driver files into your system and builds the driver information database. Figure 2-13 Windows 2000 Select Country Driver Screen Step 8.

  • Page 26: Figure 2-14 Windows 2000 Digital Signature Not Found Screen

    Omni 56K USB Lite If this screen appears, click Yes to complete the installation. Figure 2-14 Windows 2000 Digital Signature Not Found Screen 2-12 Installation...

  • Page 27: Windows Xp

    Omni 56K USB Lite 2.3.4 Windows XP Follow these steps to install your USB driver. Step 1. Make sure the included CD is in your CD-ROM drive and select Install from a list or a specific location (Advanced), then click Next.

  • Page 28: Figure 2-16 Windows Xp Select Driver

    Omni 56K USB Lite Step 2. Click Include this location in the search: and then browse for D:\Drivers\O56Ulite\W2K. Then click Next. Figure 2-16 Windows XP Select Driver 2-14 Installation...

  • Page 29: Figure 2-17 Windows Xp Digital Signature Not Found

    Omni 56K USB Lite If the following type of screen appears, click Continue Anyway to complete the installation. Figure 2-17 Windows XP Digital Signature Not Found Installation 2-15...

  • Page 30: Dial-Up Networking

    Omni 56K USB Lite Step 3. You go through the installation wizard more than once when using Windows XP. Choose the driver for the country you are in, during the second configuration of the installation wizard (it is not available during the first installation wizard configuration. Select the driver (you may need to scroll down) and click Next.

  • Page 31: In Windows 2000

    Omni 56K USB Lite 2.4.2 In Windows 2000 Click Start, Settings, Network and Dial-Up Connections, double-click Make New Connection. 2.4.3 In Windows XP Click start, All Programs, Accessories, Communications, New Connection Wizard. Installation 2-17...

  • Page 33: Chapter 3 Specifications And Functional Description

    Chapter 3 Specifications and Functional Description This chapter introduces the specifications and functions of the Omni 56K USB Lite. This chapter and the next three chapters are designed for advanced users who might need more information about the Omni 56K USB Lite's specifications and functions when programming or other applications.

  • Page 34: Protocol Support

    Omni 56K USB Lite Link layer MNP 3-4 (Microcom Networking Protocol) MNP 5 V.42 V.42bis V.42 SREJ Flow control Controlled by the USB protocol Command set Full AT command set Dialing type: DTMF/Pulse Diagnostics Power on self-test Analog loop-back test Analog loop-back with self-test V.17 G3 FAX (send and receive)

  • Page 35: Omni 56K Usb Lite Capability

    IS101 Voice Command set For more information on detailed command sets, please refer to Chapter 5. Omni 56K USB Lite Capability The data/fax/voice feature of the Omni 56K USB Lite is described in the following table: Specifications and Functional Description...

  • Page 36: Data Function

    3.3.1 Data Function Physical Layer Capability The Omni 56K USB Lite is a high performance universal modem capable of transmission speeds up to 56/33.6 Kbps full duplex on a 2-wire dial-up line. Universal compatibility covers a broad range of ITU-T and BELL standards.
  • Page 37 Omni 56K USB Lite supports both MNP and V.42 error control protocols. The MNP protocol was an industry standard developed and licensed by Microcom, Inc. The Omni 56K USB Lite supports level 4 and 3 error control protocols, commonly denoted as MNP4 and MNP3.
  • Page 38 Omni 56K USB Lite Repeat Dial The modem dials the default number stored in the Windows’ registry repeatedly if not connected. (s38.0=1,*Dn) Cyclic Dial Dial the number stored in the registry at location n (0 to 3) if cyclic dial s44.3=1 is set.
  • Page 39 Omni 56K USB Lite The following is an example of a caller ID message as it might appear on your screen: RING TIME: 04-28 12:30 CALLER NUMBER: 7135551414 or CALLER NAME: John Doe RING In the multiple message format, if the caller's number and name are available, the ring message displays both:...

  • Page 40: Table 3-5 Different Ring Types In Register S40

    Omni 56K USB Lite Please refer to the Bellcore Technical Advisory document TR-NWT-000030 for the exact data format. The above Caller ID scheme applies to the North America area. Different countries may employ different Caller ID schemes, check if the scheme used in your country is supported before using the Caller ID feature.

  • Page 41: Fax Function

    This algorithm can also be used to reduce the speech data rate to 1/3 or 1/4 of the original rate, but with voice quality degradation. Only 4-bit ADPCM is used in the Omni 56K USB Lite. Specifications and Functional Description...

  • Page 43: Chapter 4 Result Codes

    Omni 56K USB Lite Chapter 4 Result Codes Result Codes The result code is the command response or the Connect message to the DTE. The format of the result code is dependent on Xn and Vn commands. The lists are as follows:...
  • Page 44 Omni 56K USB Lite RESULT CODE FOR ATV0 ATV1 CONNECT 14400 CONNECT 16800 CONNECT 38400 CONNECT 57600 CONNECT 76800 CONNECT 115200 CONNECT 230400 CONNECT 460800 CONNECT 921600 CONNECT 307200 CONNECT 153600 CONNECT 102400 CONNECT 61440 CONNECT 51200 CONNECT 624000 CONNECT 124800...

  • Page 45: Table 4-1 Result Codes

    Omni 56K USB Lite RESULT CODE FOR ATV0 ATV1 CONNECT 24000 CONNECT 21600 CONNECT 56000 CONNECT 54666 CONNECT 53333 CONNECT 52000 CONNECT 50666 CONNECT 49333 CONNECT 48000 CONNECT 46666 CONNECT 45333 CONNECT 44000 CONNECT 42666 CONNECT 41333 CONNECT 40000 CONNECT 38666...
  • Page 46 Omni 56K USB Lite If error control result codes are enabled (X4, X5, X6, X7), the resulting message is formatted as the following: X4: CARRIER Rx Rate. PROTOCOL: Error Control Level COMPRESSION: Compression Level CONNECT DTE Speed X5: CONNECT DTE Speed/Protocol Rx Rate/Error Control Level...

  • Page 47: Chapter 5 Command Sets

    Omni 56K USB Lite Chapter 5 Command Sets This chapter lists the command set the Omni 56K USB Lite supports. These commands include data command sets, fax command sets and voice command sets. Data Command Sets 5.1.1 Basic AT Command Sets...
  • Page 48 Omni 56K USB Lite COMMAND OPTIONS FUNCTION AND DESCRIPTION REF. Dial s (numbers and options) that follow (see also S38.0, S35.4). The options of s are listed as follows: 0-9, A, B, Digits for dialing. C, D #, * Pulse dialing.
  • Page 49 Omni 56K USB Lite COMMAND OPTIONS FUNCTION AND DESCRIPTION REF. n=0 to 3 Speaker volume control. The higher the value, the higher the S24.4-6 volume. Speaker control: S21.1-2 Speaker is always OFF. M1 * Speaker is ON until carrier is detected.

  • Page 50: Extended At& Command Sets

    Omni 56K USB Lite COMMAND OPTIONS FUNCTION AND DESCRIPTION REF. n=0-2 Reset modem and set power-on profile. S15.5-7 Reset modem and load user profile n (0-1). Reset modem and load factory settings. Escape sequence code, entered in data state, wait for modem to return to command state.
  • Page 51 Omni 56K USB Lite COMMAND OPTIONS FUNCTION AND DESCRIPTION REF. &Kn Modem error control and data compression: S27.0-2 &K0 No error control. (Same as AT&K). &K1 MNP4 (See also S41.0), (include MNP3). &K2 MNP4+MNP5 (See also S38.5, S41.0). &K3 V.42+MNP4.
  • Page 52 Omni 56K USB Lite COMMAND OPTIONS FUNCTION AND DESCRIPTION REF. &Nn &N25 BELL 103 300 &N60 V.34 33600 &N61 V.34 31200 &N62 V.34 28800 &N63 V.34 26400 &N64 V.34 24000 &N65 V.34 21600 &N66 V.34 19200 &N67 V.34 16800 &N68 V.34 14400...
  • Page 53 Omni 56K USB Lite COMMAND OPTIONS FUNCTION AND DESCRIPTION REF. &Nn &N90 V.90 40000 &N89 V.90 41333 &N88 V.90 42666 &N87 V.90 44000 &N86 V.90 45333 &N85 V.90 46666 &N84 V.90 48000 &N83 V.90 49333 &N82 V.90 50666 &N81 V.90 52000 &N80...

  • Page 54: Extended At* Command Sets

    Omni 56K USB Lite COMMAND OPTIONS FUNCTION AND DESCRIPTION REF. &Tn Modem testing: &T0 Terminate test in progress. &T1 Initiate Analog Loop-back (ALB) test. &T8 Initiate Analog Loop-back with self-test (ALB+ST). &Vn View profile settings: &V0 View current active settings.

  • Page 55: Extended At# Command Sets

    Omni 56K USB Lite COMMAND OPTIONS FUNCTION AND DESCRIPTION REF. Modem error control negotiation: S21.0 *E0 * If error control negotiation fails, keep the non-error control connection. If error control negotiation fails, disconnect the call (hang- up). n=0 to 15 Set transmission power level;...

  • Page 56: Table 5-6 Service Class 1 Commands

    Omni 56K USB Lite Table 5-6 Service Class 1 Commands COMMAND DESCRIPTION VALUE +FCLASS=n Service Class Identification n=0: Sets to modem mode and Control. n=1: Sets to Class 1 mode n=8: Sets to Voice mode +FTS=n Stop transmission and pauses.

  • Page 57: Voice At Commands

    Omni 56K USB Lite VALUE MODULATION SPEED V.17 short train 12000 V.17 14400 V.17 short train 14400 5.2.2 Voice AT Commands Table 5-8 Voice AT Commands COMMAND FUNCTION OPTION DEFAULT DESCRIPTION +VIP Initialize +VSD=70, 70 (70, 7 second) parameters +VTD=100 (1 second)
  • Page 58 Omni 56K USB Lite COMMAND FUNCTION OPTION DEFAULT DESCRIPTION +VRA Ring back 0 to 255 0: turn off the timer. goes away 1 to 255: Defines the period without timer ringback (after at lease one ringback has been detected) in 100 ms units.

  • Page 59: Voice Shielded Dte Commands

    Omni 56K USB Lite COMMAND FUNCTION OPTION DEFAULT DESCRIPTION +VTD Set default 1 to 255 Unit: 0.01 second. duration of DTMF tone +VIT Inactivity 0 to 255 Unit: 0.1 second. timer 5.2.3 Voice Shielded DTE Commands Table 5-9 Voice Shielded DTE Commands...

  • Page 60: S-Register Descriptions

    Omni 56K USB Lite RESPONSE CODE DESCRIPTION <DLE>u Transmission Under run in playback state. <DLE><ETX> End of stream. S-Register Descriptions In most bit-mapped S-registers, the default bit value is 0. An asterisk follows non-0 default values. In some cases, default values are shown in the reference column preceded by +. Some bits are reserved for factory use and should not be changed.

  • Page 61: Table 5-12 Extended S-Registers "Atsn=X

    Omni 56K USB Lite COMMAND FUNCTION AND DESCRIPTION +REF. S10= Sets duration, in tenths of a second, modem waits after loss of carrier +007 before hanging up. S11= Sets duration and spacing, in milliseconds of dialed Touch-Tones. +070 Table 5-12 Extended S-Registers "ATSn=x"...
  • Page 62 Omni 56K USB Lite COMMAND FUNCTION AND DESCRIPTION REF. S19= Modem connection mode, same. +000/&Nn 0-99 Setting value as 'AT&Nn' command. NOTE: Only speeds up to S20=15 are supported by auto-speed detection. S21= Bit-mapped register. +178 Maintain a non-error control connection when modem error control handshake fails (default).
  • Page 63 Omni 56K USB Lite COMMAND FUNCTION AND DESCRIPTION REF. S21= Assume DTR always ON. &D0 108.1, DTR OFF-ON transition causes dial of the &D1 default number. 108.2 Data Terminal Ready, DTR OFF causes the &D2 modem to hang up and return to command state (default) 108.2, DTR OFF causes the modem to hang up...
  • Page 64 Omni 56K USB Lite COMMAND FUNCTION AND DESCRIPTION REF. S23= Display result code in numeric format (see S35.7). Display result code in verbose format (default). Modem returns result code (default). Modem does not return result code (see also S40.1). S24= Bit-mapped register.
  • Page 65 Omni 56K USB Lite COMMAND FUNCTION AND DESCRIPTION REF. S27= Signal quality. No response to poor signal quality. Retrain action taken if signal quality is poor. Adaptive rate (auto fall-back/forward) when signal quality changes (default). Disconnect when signal quality is poor.
  • Page 66 Omni 56K USB Lite COMMAND FUNCTION AND DESCRIPTION REF. S38= Bit-mapped register. +000 Repeatedly dialing default number if not *Dn, S29 connected. CD tracks the carrier (default). &C0 DCD ON/OFF sequence follows UNIX standard, &C1, DCD ON before connect message is sent, DCD S21.4...
  • Page 67 Omni 56K USB Lite COMMAND FUNCTION AND DESCRIPTION REF. S41= Force S0>=2; does not answer on the first ring. Ignore calling tone, not to be used as fax detection. S42= Bit-mapped register. +000 Enables throughput averaging. CND message forces on even if ATQ2 is set.
  • Page 68 Omni 56K USB Lite COMMAND FUNCTION AND DESCRIPTION REF. S46= CND silence detection interval. +028 0 to To process the CND, silence must be detected for the specified interval, in 20 ms units. S48= Bit-mapped register. +000 Cause CND information to be reported in raw format.

  • Page 69: Table 5-13 Table Key

    Omni 56K USB Lite Table 5-13 Table Key S-register bit number, 'b', used in 'ATSr.b=n' and 'ATSr.b=?'. Decimal value, 'x', used in 'ATSn=x'. Equivalent Hexadecimal value. +nnn Factory default when listed in 'Reference' column. NOTE: 'AT' is omitted when an AT command is referred to in the 'Reference' column.

  • Page 71: Chapter 6 Virtual Com Ports And Hyperterminal

    Omni 56K USB Lite Chapter 6 Virtual Com Ports and HyperTerminal Virtual COM port Step 1. To know which virtual COM port the 56K UCM Modem uses, click Start, Control Panel, double click Modems, select ZyXEL Omni56K USB Lite and click Properties.

  • Page 72: Using Hyperterminal

    Omni 56K USB Lite Step 2. The General tab shows which virtual COM port the ZyXEL 56K USB Lite is using. Figure 6-2 ZyXEL Omni56K USB Lite Properties General Tab Using HyperTerminal Step 1. Click Start and then Run, type " C:\Program Files\Accessories\HyperTerminal\Hypertrm.exe"...

  • Page 73: Figure 6-3 Connection Description Screen

    Omni 56K USB Lite Figure 6-3 Connection Description Screen Step 3. In the Connect using: field, select ZyXEL Omni56K USB. Configure the Country Code, Area Code, and Phone Number fields with information from your ISP and click OK. Figure 6-4 Connect To Screen...

  • Page 74: Figure 6-5 Connect Screen

    Omni 56K USB Lite Step 4. Click Cancel to use the terminal. Figure 6-5 Connect Screen Step 5. Now you can issue any command in the AT-command set to the modem or make a peer-to-peer file transfer with a remote modem.

  • Page 75: Chapter 7 Drivers

    Omni 56K USB Lite Chapter 7 Drivers Driver Installation Refer to the procedure in the Installation chapter. Uninstalling Your Driver Log on as the administrator when using Windows 2000 or XP, to be able to remove programs. Step 1. In Windows 98 and 2000: Click Start, Settings, Control Panel, double click Add and Remove Programs and select ZyXEL Omni56K USB Lite.

  • Page 77: Chapter 8 Troubleshooting

    Omni 56K USB Lite Chapter 8 Troubleshooting This chapter covers potential problems and possible solutions. PROBLEM CORRECTIVE ACTION None of the LEDs are on. Make sure your computer is turned on. Check the USB cable connections between the modem and your computer.

  • Page 79: Appendix A Tcp/Ip

    Omni 56K USB Lite Appendix A TCP/IP Setting up Your Windows 95/98/Me Computer Installing TCP/IP Components 1. Click Start, Settings, Control Panel and double-click the Network icon. The Network window Configuration tab displays a list of installed components. You need a network adapter, the TCP/IP protocol and Client for Microsoft Networks.
  • Page 80 Omni 56K USB Lite • · If you have a static IP address, select Specify an IP address and type your information into the IP Address and Subnet Mask fields. 3. Click the DNS Configuration tab. • If you do not know your DNS information, select Disable DNS.
  • Page 81 Omni 56K USB Lite • If you know your DNS server IP address(es), type them in the Preferred DNS server and Alternate DNS server fields. If you have previously configured DNS servers, click Advanced and then the DNS tab to order them.
  • Page 82 Omni 56K USB Lite In TCP/IP Gateway Address, type the IP address of the default gateway in Gateway. To manually configure a default metric (the number of transmission hops), clear the Automatic metric check box and type a metric in Metric.

  • Page 83: Glossary

    Omni 56K USB Lite Glossary Analog An electrical circuit that is represented by means of continuous, variable physical quantities (such as voltages and frequencies), as opposed to discrete representations (like the 0/1, off/on representation of digital circuits). Analog Testing method in which the modem's analog signal is connected to the analog Loopback Test input.
  • Page 84 Omni 56K USB Lite zero. The smallest unit of computerized data. Count of data bits transmitted per time unit. The framing bits needed for Bit Rate asynchronous transfer are also counted in the calculation of the bit rate. In general, the bit rate is ten times the character rate.
  • Page 85 Omni 56K USB Lite If components are compatible, they work with each other. Compatibility Compression See data compression. Cookie A string of characters saved by a web browser on the user's hard disk. Many web pages send cookies to track specific user information. Cookies can be used to retain information as the user browses a web site.
  • Page 86 Omni 56K USB Lite Denial of Act of preventing customers, users, clients or other machines from accessing Service data on a computer. This is usually accomplished by interrupting or overwhelming the computer with bad or excessive information requests. Digital The use of a binary code to represent information, such as 0/1, or on/off.
  • Page 87 Omni 56K USB Lite A Digital Subscriber Line Access Multiplexer (DSLAM) is a network device, DSLAM usually at a telephone company central office, that receives signals from multiple customer Digital Subscriber Line connections and puts the signals on a high-speed backbone line using multiplexing techniques. Depending on the product, DSLAM multiplexers connect DSL lines with some combination of asynchronous transfer mode (ATM), frame relay, or IP networks.
  • Page 88 Omni 56K USB Lite Encryption The act of substituting numbers and characters in a file so that the file is unreadable until it is decrypted. Encryption is usually done using a mathematical formula that determines how the file is decrypted.
  • Page 89 Omni 56K USB Lite The front panel on the ZyXEL modems consists of LED indicators. Front Panel Frequency Shift Keying - a frequency modulation scheme. Full-duplex Full duplex is a transmission link where transmission can take place in both directions simultaneously.
  • Page 90 Omni 56K USB Lite internet. (Upper case I) The vast collection of inter-connected networks that all use the Internet TCP/IP protocols and that evolved from the ARPANET of the late 60's and early 70's. The Internet now (July 1995) connects roughly 60,000 independent networks into a vast global internet.
  • Page 91 Omni 56K USB Lite accurately describes a LAN as well. LANs have different topologies, the most common being the linear bus and the star configuration. LAPM Link Access Procedure for Modems - a protocol that controls the handshake between two modems.
  • Page 92 Omni 56K USB Lite demodulated and sent to the DTE as digital signals again. Translating digital states to analog waveforms. Modulation NDIS Network Driver Interface Specification is a Windows® specification for how communication protocol programs (such as TCP/IP) and network device drivers should communicate with each other.
  • Page 93 Omni 56K USB Lite character, resulting in an even number of set bits. Password A program that uses a dictionary of words, phrases, names, etc. to guess a Cracker password. Password A system of encrypting electronic files using a single key or password. Anyone Encryption who knows the password can decrypt the file.
  • Page 94 Omni 56K USB Lite keyboard port) or through software. Plain Old Telephone Service is the analog telephone service that runs over POTS copper twisted-pair wires and is based on the original Bell telephone system. Twisted-pair wires connect homes and businesses to a neighborhood central office.
  • Page 95 Omni 56K USB Lite public key used during encryption, and a corresponding private key used during Encryption decryption. QUIET A state in the voice mode of ZyXEL modems. Quiet is detected after a long pause in voice data. Random Access Memory - working memory. The modem uses it among many other uses to store information on sent, but not yet acknowledged data.
  • Page 96 Omni 56K USB Lite Serial Port Communication path through which data is transferred bitwise. Only one wire each is available for transmitted and received data. Server A computer, or a software package, that provides a specific kind of service to client software running on other computers.
  • Page 97 Omni 56K USB Lite that show where a character ends. Straight A cable that wires a pin to its equivalent pin. This cable connects two dissimilar Through devices, for example, a data terminal equipment (DTE) device and a data Ethernet Cable communications equipment (DCE) device.
  • Page 98 Omni 56K USB Lite Transfer Mode Data can be transferred either synchronously or asynchronously. Transfer Rate The speed at which the data bits are effectively transferred. UART Universal Asynchronous Receiver and Transmitter; a special IC chip which controls the serial port. Different models are available for PCs. Models with an internal buffer usually allow higher transfer rates.
  • Page 99 Omni 56K USB Lite A file transfer protocol with variable block size, re-initiation of aborted transfers ZModem and transfer of several files in one transfer along with file (and path) names. Glossary...

  • Page 101: Index

    Omni 56K USB Lite Index Advantages of USB........... xii Quick Start Guide ..........xi Control Panel Application........ 3-1 Related Documentation ........xi Copyright ............ii Repair ..............iii Disclaimer............ii Trademarks ............. ii Service ............... iii Customer Support ..........vi Software Setup and Modem Installation..1-1 Support Disk ............xi...

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