Motorola V3229 Operating Instructions - Page 66

5 Asynchronous Operating Commands separately or in strings. There is no data communication link established in this mode. Online Command Mode This mode is entered from the data mode after the escape command has been entered. The data communication link remains established but data transmission is suspended. The modem will now accept commands like it does in the offline command mode. Data Mode The modem goes to data mode (online) after it acknowledges the proper signal and successfully connects with a compatible modem. In data mode, the modem sends and receives data, but will not accept or execute command instructions. SENDING COMMANDS TO THE MODEM Creating a Command Statement AT When the computer, modem, and monitor are on, an instruction can be sent to the modem telling it what function or activity to perform. The instruction, called a command statement, command string, or just command, is typed using the computer keyboard. The command statement temporarily resides in a section of memory called the command buffer. Each command statement is made up of characters, numbers, and such keyboard symbols as the & and % signs. Commands must be written in a specific form so the modem recognizes and follows the instruction. -2 V.3229 / V.3229L