Siemens MC55 manual Combining AT commands on the same command line

MC55 AT Command Set

1.4 AT command syntax

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Example 1: Omitting parameters in the middle of a string

AT+CCUG?	Query current setting
+CCUG: 1,10,1
OK
AT+CCUG=,9	Set only the middle parameter
OK
AT+CCUG?	Query new setting
+CCUG: 1,9,1
OK
Example 2: Using default parameter values for optional parameters
AT+CFUN=5,0	Activate CYCLIC SLEEP mode, don't reset ME
OK
AT+CFUN?	Query ME mode
+CFUN: 5
OK
AT+CFUN=	Set ME back to normal (default parameters: 1,0)
OK

+CFUN: 1

OK

1.4.2Combining 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 com- mands 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. Oth- erwise, the responses may not be in the expected order.

AT command type	Comment
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.

MC55_ATC_V01.05	Page 18 of 469	2/10/04
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