C55/C55i AT COMMAND SET Description Preliminary - Falcom

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C55/C55I AT COMMAND SET VERSION 1.00 • First the profile will be set to factory default (see AT&F). If there is a valid user profile (stored with AT&W), this profile will be loaded afterwards. • Any additional commands on the same command line may be ignored. A delay of 300 ms is required before next command is sent, otherwise "OK" response may be corrupted. 1.8 AT+CFUN Set phone functionality This command serves to control the functionality level of the ME. It can be used to reset the ME, to choose one of the SLEEP modes or to return to full functionality. Intended for power saving, SLEEP mode reduces the functionality of the ME to a minimum and thus minimizes the current consumption. SLEEP mode falls in two categories: • NON-CYCLIC SLEEP mode =0 • and CYCLIC SLEEP modes, selectable as = 5, 6, 7,8 or 9. NON-CYCLIC SLEEP mode permanently blocks the serial interface. The CYCLIC SLEEP mode, however, is a dynamic process which alternatingly enables and disables the serial interface. The major benefit of all CYCLIC SLEEP modes is that the serial interface remains accessible and that, in intermittent wake-up periods, characters can be sent or received without terminating the selected mode. The best choice is using = 5, 6, 7, 8 or 9, since in these modes C55 automatically resumes power saving, after you have sent or received a short message or made a call. =5 or 6 do not offer this feature to the same extent and are only supported for compatibility with earlier releases. In all CYCLIC SLEEP modes, you can enter =1 to permanently wake up C55 and take it back to full functionality. Please refer to section 1.8.1 for a summary of all SLEEP modes and the different ways of waking up the module. Syntax Test Command AT+CFUN=? Read Command AT+CFUN? Write Command AT+CFUN=[[, ]] Response(s) +CFUN: (list of supported s) , (list of supported s) OK Response(s) +CFUN: OK Response(s) OK ERROR +CME ERROR Reference(s) PIN ASC0 GSM 07.07 ○ ● This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission. Page 26
C55/C55I AT COMMAND SET VERSION 1.00 Command Description The test command returns the values of the supported parameters. The read command returns the current functionality value. The write command can be used to reset the ME, to choose one of the SLEEP modes or to return to full functionality. Parameter Description (num) 0 NON-CYCLIC SLEEP mode: In this mode, the AT interface is not accessible. Consequently, once you have set level 0, do not send further characters. Otherwise these characters remain in the input buffer and may delay the output of an unsolicited result code. The first wake-up event stops power saving and [1] (&F) takes the ME back to full functionality level =1. Full functionality. If the ME is in one of the CYCLIC SLEEP modes you can issue AT+CFUN=1 to stop power saving and return to full functionality. Keep in mind that, unlike the reset command described below, this action does not restart the ME but only changes the level of functionality. See parameter for details on the reset. 5 CYCLIC SLEEP mode: In this mode, the serial interface is shortly enabled during paging. If characters are recognized on the serial interface, the ME stays active for 2 seconds after the last character was sent or received. 6 CYCLIC SLEEP mode: In this mode, the serial interface is shortly enabled during paging. If characters are recognized on the serial interface, the ME stays active for 10 minutes after the last character was sent or received. To ensure that power saving takes effect immediately, the ME stays active for only 2 seconds after =6 was entered. 7 CYCLIC SLEEP mode: In this mode, the serial interface is shortly enabled during paging. If characters are recognized on the serial interface, the ME stays active for 2 seconds after the last character was sent or received. ME exits SLEEP mode only, if AT+CFUN=1 is entered. 8 CYCLIC SLEEP mode: In this mode, the serial interface is shortly enabled during paging. If characters are recognized on the serial interface, the ME stays active for 10 minutes after the last character was sent or received. ME exits SLEEP mode only, if AT+CFUN=1 is entered. This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission. Page 27
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C55/C55i AT COMMAND SET Description Preliminary - Falcom

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