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AT Command Set

MC35_ATC_01_V05.00 Page 16 of 256 15.07.2002

1.4.2 Combining AT commands on the same command line

You may enter several AT commands on the same line. This eliminates the need to type the "AT" or

"at" prefix before each command. Instead, it is only needed once at the beginning of the command

line. Use a semicolon as command delimiter.

The command line buffer accepts a maximum of 391 characters. If this number is exceeded none of

the commands will be executed and TA returns ERROR.

The table below lists the AT commands you cannot enter together with other commands on the same

line. Otherwise, the responses may not be in the expected order.

Table 3: Illegal combinations of AT commands

V.25ter commands With

FAX commands, Prefix AT+F

GSM 7.07 commands With

Siemens commands, Prefix AT^S

GSM 7.05 commands (SMS) --- To be used standalone

Commands starting with AT& --- To be used standalone

AT+IPR --- To be used standalone

Note: When concatenating AT commands please keep in mind that the sequence of processing may

be different from the sequential order of command input. Therefore, if the consecutive order of

the issued commands is your concern, avoid concatenating commands on the same line.

1.4.3 Entering successive AT commands on separate lines

When you enter a series of AT commands on separate lines, leave a pause between the preceding

and the following command until OK appears. This avoids sending too many AT commands at a time

without waiting for a response for each.

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