Specifications

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3GPPTS27.007ATCOMMANDS
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HSPA+ATCommandsReferenceGuide 74
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Testcommandreturnsthelistofsupportedvaluesfor<fun>and<rst>.
Syntax
Command Commandtype
AT+CFUN=[<fun>[,<rst>]] Set
AT+CFUN? Read
AT+CFUN=? Test
ParametersandValues
<fun> Powersavingfunctionmode.
0
Minimumfunctions,NON‐CYCLICSLEEPmode.Inthismode,theATinterfaceis
notaccessible.Consequently,onceyouhaveset<fun>level0,donotsend
furthercharacters.Otherwisethesecharactersremainintheinputbufferand
maydelaytheoutputofanunsolicitedresultco
de.Thefirstwake‐upeventstops
powersavingandtakestheMEbacktoafullyfunctioninglevel<fun>=1.
1 Mobilefullfunctionswithpowersavingdisabled.Default:1.
2 
4 DisablebothTXandRX.
5 Mobilefullfunctionswithpowersavingenabled.
7
CYCLICSLEEPmode.Inthismode,th
eserialinterfaceisperiodicallyenabledwhile
CTSisactive.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.
9 
<rst> Resetflag.
0 Dono
tresettheMEbeforesettingitto<fun>functionlevel.
1
Resetthedevice.Thedeviceisfullyfunctionalafterthereset.Thisvalueis
availableonlyfor<fun>=1
Notes
 IssuingAT+CFUN=4[,0]causesthemoduletoperformanetworkderegistrationandaSIMdeactivation.
 Ifpowersavingenabled,itreducesthepowerconsumptionduringtheidletime,thusallowingalongerstandby
timewithagivenbatterycapacity.
 Toplacethemoduleinpowersavingmode,setthe<fun>parameteratvalue=5andthelineDTR(RS232)must
besettoOFF.Onceinpowersaving,theCTSlineswitchtotheOFFstatustosignalthatthemoduleisreallyin
powersavingcondition.
Duringthepo
wersavingcondition,beforesendinganyATcommandontheserialline,theDTRmustbesetto
ON(0V)toexitfrompowersavinganditmustbewaitedfortheCTS(RS232)linetogoinONstatus.
UntiltheDTRlineisON,themoduledoesnotreturnbackinthepowersavingcondition.
 Thepowersavingfunctiondoesnotaffectthenetworkbehaviorofthemodule,evenduringthepowersave
conditionthemoduleremainsregisteredonthenetworkandreachableforincomingcallsorSMS.Ifacall
incomesduringthepowersave,thenthemodulewakeupsandproceedsnormallywiththeunsolicite
dincoming
callcode.
 Reference:3GPPTS27.007.