This Technical Reference for Hayes Modem Users offers additional information about the Hayes Standard AT Command Set for users who want to use the command set to control the modem, rather than using full-featured software. To help you do this, the complete command set is defined in greater detail than that provided on the AT Command Set Reference Card that accompanied your modem. All of the commands in the set are included in this document. You’ll also find additional discussions on some of the more complicated options, such as synchronous communications, and the interactions between communication standards, negotiation commands, and modem speeds. In addition, information about the connections between the modem and the DTE (computer or terminal) is included. With the information provided here, you should be able to configure your modem with AT commands for a variety of communication environments. If you are just starting out with communications programming, this reference should provide you with sufficient tips to address the modem’s features through a software program of your own. If this reference seems more technically oriented than you anticipated, we suggest that you purchase one of Hayes Smartcom Products. Any of these fine programs will fully control the modem for almost any telecommunication requirements.
Hayes Microcomputer Products (1991) Technical Reference For Hayes Modem Users