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AT command set Last modified: Monday, September 01, 1997

Pronounced ay-tee command set, the de facto standard language for controlling modems. The AT command set was developed by Hayes and is recognized by virtually all personal computer modems.

AT command reference summary Complete list of commands in the extended AT command set. Extended AT command set reference This resource page, from modems.com, provides links to general modem operation and modem control links for AT commands and functions.