3com 56K マニュアル

目次

• Introduction

  1
• Finding Specific Information in This Guide

  2
• Conventions

  2
• Related Documentation

  3
• Year 2000 Compliance

  3
• Windows 95/98

  1
• What You Need

  1
• Configuring Your modem with Plug and Play

  1
• Files Needed By Your modem

  1
• Installing the Latest Software

  1
• Accessing Your Internet Service Provider

  1
• Windows NT 4.0 and Later

  1
• What you need

  1
• Configuring Your modem

  1
• Setting up RAS

  1
• Determining if TCP/IP is installed

  1
• Installing TCP/IP

  1
• Configuring a PPP connection

  1
• Configuring a SLIP connection

  1
• Troubleshooting RAS

  1
• Macintosh

  1
• Handshaking Cable

  1
• System Configuration

  1
• Accessing the Internet

  1
• Macintosh (230K) High Speed script installation

  1
• Installing the script

  1
• Configuring Open Transport PPP

  1
• Selecting the correct TCP/IP settings

  1
• Setting up your ISP information

  1
• Other Operating Systems

  1
• If You Are Using Windows 3.x

  1
• If You Are Using MS-DOS

  1
• If You Are Using UNIX, Linux, or AIX

  1
• Overview

  2
• General rules for using AT commands

  2
• Basic AT commands

  2
• Using S-Registers

  2
• Displaying S-Register settings

  2
• Setting an S-Register

  2
• Getting a list of S-Registers

  2
• Understanding bit-mapped S-Registers

  2
• Command and Online Modes

  3
• Entering Online Command Mode

  3
• Returning to Online Mode

  3
• Controlling Local Echo

  3
• Command-Mode Local Echo

  3
• Online-Mode Local Echo

  3
• Data and Fax Modes

  3
• Dialing

  4
• Dial options

  4
• Carrier Loss Redial

  4
• Answering Calls

  4
• Force Answer Mode

  4
• Auto Answer

  4
• Hanging up

  4
• Making International calls

  4
• Handshaking options

  4
• Guard tone

  4
• Call Detection

  4
• Caller ID Functions

  4
• Service Types

  4
• Applications of Caller ID Technology

  4
• How the Business Modem Handles Caller ID

  4
• Presentation Formats

  4
• Commands

  4
• References

  4
• Distinctive Ring Support

  4
• Commands

  4
• Result Codes

  4
• Overview

  5
• Working with RAM and NVRAM

  5
• Saving a Phone Number to NVRAM

  5
• Displaying S-Register Value Information

  5
• Saving a Command String to NVRAM

  5
• Working with Flash Memory

  5
• Saving ROM Templates to NVRAM

  5
• Default Settings

  5
• Result Code Display Commands

  6
• Additional Result Code Subsets

  6
• Data Terminal Ready

  7
• Data Set Ready

  7
• Carrier Detect

  7
• Overview

  8
• Serial Port Rates

  8
• Connection Rates

  8
• Controlling Link Speeds with &N and &U

  8
• Controlling Link Speeds

  8
• Limiting the Highest Possible Connect Speed

  8
• Limiting the Lowest Possible Connect Speed

  8
• Limiting a Range of Possible Connect Speeds

  8
• &N and &U Command Values

  8
• Setting DTE Rate to 230 Kbps

  8
• Overview

  9
• Setting Up Remote Access

  9
• At the Host Business Modem

  9
• Other Remote-Access Commands

  9
• Accessing the Host

  9
• At the Guest Device

  9
• Viewing and Changing the Host’s Configuration

  9
• Remote Configuration Commands

  9
• Quitting a Remote-Access Session

  9
• Overview

  10
• Setting up Dial Security

  10
• Dialback options

  10
• Modifying Accounts

  10
• Autopass Prompting

  10
• Password Prompting

  10
• Maintaining Security Accounts

  10
• Remote Configuration

  10
• What the Guest User Needs to Do

  10
• Configuring Dial Security Remotely

  10
• Overview

  11
• Hardware and Software Flow Control

  11
• Hardware Flow Control

  11
• Software Flow Control

  11
• Received Data Flow Control

  11
• Transmit-Data Flow Control

  11
• Handshaking

  12
• Selective Reject

  12
• V.34

  12
• V.90 Capabilities

  12
• Other Protocols

  12
• x2

  12
• Fast Class (V.FC) Handshaking

  12
• HST

  12
• USR V.32terbo to USR V.32terbo

  12
• Lower-speed V. Protocols

  12
• Error Control

  12
• Error-Control Commands

  12
• V.42 Error Control

  12
• MNP Error Control

  12
• Error Control and Flow Control

  12
• Data Compression

  12
• V.42bis versus MNP5 Data Compression

  12
• Getting Maximum Throughput

  12
• Maximum throughput results when:

  12
• Overview

  13
• Querying

  13
• Displaying Help

  13
• Overview

  14
• Testing the Business Modem using AT&Tn

  14
• Analog Loopback Testing

  14
• Stopping a Test (AT&T0, ATS18)

  14
• Digital Loopback Testing (AT&T3)

  14
• Remote Digital Loopback Testing (AT&T6, AT&T7)

  14
• Granting a Digital Loopback Test Request (AT&T4)

  14
• Canceling All Digital Loopback Test Requests (&T5)

  14
• Testing Using Keyboard Data (AT&T6)

  14
• Testing Using a Built-in Test Pattern (AT&T7)

  14
• Testing the Business Modem using S-Resister 16

  14
• Analog Loopback (AL) S16=1D

  14
• Testing Using Keyboard Data (ATS16=8)

  14
• Testing Using a Built-in Test Pattern (ATS16=4)

  14
• Ending Testing That Uses the Test Pattern

  14
• Problems That Occur Before Connecting

  15
• No response to AT

  15
• The Business Modem won't dial

  15
• Double characters are appearing on your monitor

  15
• Hear ringing but the Business Modem won't answer

  15
• no call was received,

  15
• press any keys

  15
• Problems that Occur After Connecting

  15
• Your screen displays random or "garbage" characters

  15
• Many CRC errors

  15
• Mainframe computer keeps dropping your connection

  15
• Bad faxes or can't fax

  15
• communications link

  15
• Errors during software download

  15
• If You Still Have Problems

  15
• Overview

  16
• Checking Your Business Modem’s Software Version

  16
• Getting New Operating Software

  16
• Sending New Software to your modem

  16
• If Your Modem Doesn’t Respond

  16