RadiSys EXM-31 Hardware Reference Manual
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Contents
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EXM-31 Hardware ReferencePage 144 4AT CommandsAT commands are issued from an asynchronous DTE, such as a PC, and control themodem’s operating and software configuration. The following section lists all ATcommands supported by the AT&T HSM Complete Chip Set. The defaults for eachcommand are in bold.Initialization StringsInitialization strings are used to initialize the modem before beginning to dial anumber. One of the most common is to return the modem to the factory defaultvalues:AT&F&W0This command loads the factory default settings stores them as the active user profile#0 into one of the two nonvolatile stored profile memory locations. Other commandscan be used in tandem, in addition to, or mixed.Basic AT CommandsA/ Repeat Last CommandThis command re-executes last command string (not to be preceded with AT orfollowed by pressing the Return key.)A Answer CommandThis command instructs the modem to go off-hook and attempt to establish aconnection without waiting for a ring.Bn Communication Standard OptionThis command is used to configure the modem to the desired communicationsstandard settings at particular line speed.B0 Selects CCITT V.22 when modem is at 1200 bits/sSelects CCITT V.21 when modem is at 300 bits/sB1 Selects Bell 212A when modem is at 1200 bits/s |
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