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 onc e 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 ex ceeded 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 c onsecutive order of
the issued commands is your concern, avoid concatenating comm ands on the same line.
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 s ending too many AT commands at a time
without waiting for a response for each.