MaxTech 56K BPS, V.34+ Section Three AT Command Set, Executing Commands, Command Structure

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contain reference material, and can be skipped. If you have difficulties getting your modem to work, read Section 6 - Troubleshooting to find answers to com- monly asked questions and problems.

Section Three - AT Command Set

3.1 Executing Commands

Commands are accepted by the modem while it is in Command Mode. Your modem is automatically in Command Mode until you dial a number and establish a connection. Commands may be sent to your modem from a PC running communication software or any other terminal devices.

Your modem is capable of data communication at rates of: 300, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600, and 115200 bps. Make sure your COM port baud rate settings in your commu- nications software is set to one of the above speeds.

3.2 Command Structure

All commands sent to the modem must begin with AT and end with ENTER. All commands may be typed in either upper or lower case, but not mixed. To make the command line more readable, spaces may be inserted between commands. If you omit a param- eter from a command that requires one, it is just like specifying a parameter of 0. Example:

ATH [ENTER]

This command causes your modem to hang up.

3.3 Basic AT Commands

In the following listings, all default settings are printed in bold text.

Command Function

AManually answer incoming call.

A/

 

Repeat last command executed. Do not

 

 

precede A/ with AT or follow with ENTER.

B_

B0

CCITT mode

 

B1

Bell mode

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Contents 56K BPS Page Section Two Installation Section One IntroductionUnpacking Your Modem Proceed to .3 now if you have every- thing required Hardware InstallationConfiguring in Windows Hardware Configuration Plug and PlayWindows 95 Release 4.00.950 B Windows 95 ReleaseSoftware Installation and Configuration Configuring in a Plug and Play System with- out WindowsConfiguring in a Non-Plug and Play System Testing Your Modem After Installation Using Your ModemWhere To Go From Here Executing Commands Section Three AT Command SetCommand Structure Basic AT CommandsLow speaker volume Commands are echoedEnable Autoscan mode Touch-tone dialingExtended AT Commands Power on or reset Force DSR Signal High onRatio CTS operates per flow controlMNP/V.42/V.42bis Commands Section Four S Registers Fax Class 1 CommandsS Registers Register Function Range/units DefaultSection Five Result Codes Modem does not respond to commands Section Six TroubleshootingModem does not dial Modem dials but does not connectHigh pitch tone is heard whenever you answer the phone Section Seven Support and ServiceAppendix a Specifications Appendix C NoticesFCC Compliance DOC Compliance Information FCC Class B StatementUL Notice

V.34+, K56Plus, 56K BPS specifications

MaxTech 56K BPS, K56Plus, and V.34+ are modem technologies that revolutionized data transmission in the late 1990s, allowing users to connect to the Internet at unprecedented speeds. As internet usage skyrocketed during this period, the need for faster, more efficient modem standards became paramount. MaxTech, a prominent player in the telecommunications industry, was at the forefront of this evolution.

One of the standout features of MaxTech 56K modems is their ability to exploit the existing telephone infrastructure for faster data transmission. The 56K BPS technology specifically allowed for download speeds of up to 56 kilobits per second, leveraging a combination of digital signal processing and advanced modulation techniques. This was a significant leap from the earlier 33.6K modems, providing users with enhanced access to online content, file downloads, and multimedia experiences.

K56Plus, another critical technology developed during this era, improved upon the 56K standard by enabling modems to achieve higher speeds in optimal conditions. It utilized both analog and digital transmission paths to maximize throughput, making it more versatile and efficient than its predecessors. This adaptability allowed for better performance in varied line conditions, something essential for comprehensive Internet use.

V.34+, an enhancement of the V.34 modem standard, introduced better error correction and modulation schemes, ensuring more reliable and robust connections. This technology featured improved handling of data corruption and transmission errors, which was vital for maintaining stable internet connectivity during longer sessions, particularly for those downloading large files or streaming audio.

In terms of characteristics, MaxTech modems were known for their user-friendly interfaces and plug-and-play capabilities, making installation a seamless experience for a majority of users. These modems also incorporated technologies such as V.42 error correction and MNP protocol, further enhancing the reliability of data transmission.

Overall, MaxTech 56K BPS, K56Plus, and V.34+ mark a significant chapter in the history of internet connectivity. They provided a foundation for the broadband revolution that followed by pushing the limits of dial-up technology. Their advanced features and robust performance paved the way for an era of enhanced online experiences, shaping the way users interacted with the digital landscape for years to come.
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