4AT CommandsBasic AT CommandsA summary of the commands implemented by the modem are shownin the following table labeled “AT Command Set Summary”.Commands may be executed when the modem is in COMMAND mode.COMMAND mode is entered upon one of the following conditions:• After power up• At the termination of a connection• After the execution of a command other than dial or answercommands (ATO or AT&T)• Upon the receipt of the ESCAPE SEQUENCE (three consecutivecharacters matching the contents of S register 2) while in onlinemode• Upon the on-to-off transition of DTR if D1, &D2, or &D3 has beensetModemexperiences errorswhile on-line witha remote modem.1 Make sure Call Waiting is turned off.2 Make sure to use Xon/Xoff software flow controlwhen transferring binary files.Problem Solution