C55/C55i AT COMMAND SET Description Preliminary - Falcom

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C55/C55I AT COMMAND SET VERSION 1.00 0.4 AT command syntax The "AT" or "at" prefix must be set at the beginning of each command line. To terminate a command line enter . Commands are usually followed by a response that includes "". Throughout this document, only the responses are presented, are omitted intentionally. Types of AT commands and responses: AT command type Syntax Function Test command AT+CXXX=? The mobile equipment returns the list of parameters and value ranges set with the corresponding Write command or by internal processes. Read command AT+CXXX? This command returns the currently set value of the parameter or parameters. Write command AT+CXXX= This command sets user-definable parameter values. Exec(ution) command AT+CXXX The execution command reads nonvariable parameters determined by internal processes in the GSM engine. 0.4.1 Using parameters • Optional parameters are enclosed in square brackets. If optional parameters are omitted, the current settings are used until you change them. • Optional parameters or subparameters can be omitted unless they are followed by other parameters. If you want to omit a parameter in the middle of a string it must be replaced by a comma. See also example 1. • A parameter value enclosed in square brackets represents the value that will be used if an optional parameter is omitted. See also example 2. • When the parameter is a character string, e.g. or , the string must be enclosed in quotation marks, e.g. "Charlie Brown" or "+49030xxxx". Symbols within quotation marks will be recognized as strings. • All spaces will be ignored when using strings without quotation marks. • It is possible to omit the leading zeros of strings which represent numbers. • If an optional parameter of a V.25ter command is omitted, its value is assumed to be 0. 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 This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission. Page 10
C55/C55I AT COMMAND SET VERSION 1.00 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 0.4.2 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. AT command type Comment V.25ter commands with FAX commands (Prefix AT+F) GSM 7.07 commands with 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. This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission. Page 11
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C55/C55i AT COMMAND SET Description Preliminary - Falcom

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