Specifications

INTRODUCTION
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19 ATCommandsforHSPA‐H5Modems
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Numericform Verboseform
11 CONNECT4800.
12 CONNECT9600.
15 CONNECT14400.
23 CONNECT1200/75.
CommandResponseTim e‐Out
Ifresponsecodesareenabled,whichisthedefaultsetting,theneverycommandissuedtothemodulereturnsa
resultresponse.
Thetimeneededtoprocessthegivencommandand returntheresponsevaries,dependingonthecommandtype.
CommandsthatdonotinteractwiththeSIMorthenetwork,and
onlyinvolveinternalsetupsorreadings,havean
immediateresponse.
CommandsthatinteractwiththeSIMorthenetworkcantakemanysecondstosendaresponse,dependingon:
 SIMconfiguration—forexample,numberofcontactsstoredinthephonebook,numberofstoredSMS.
 Thenetworkthecomma ndmayinteractwith.
CommandIssuingTiming
ThechainCommand‐>Responseisalwaysrespected.Youmaynotissueanewcommanduntilthemodule
finishessendingallofitsresponseresultcodes.
Thisappliesespeciallytoapplicationsthat“sense”theOKtextandthereforemaysendthenextcommandbefore
thecompletecode<CR><LF>OK<CR><LF>issentby
themodule.
Itisrecommendedtowaitforatleast20msbetweentheendofthereceptionoftheresponseand theissueofthe
nextATcommand.
Iftheresponsecodesaredisabled,andassuch,themoduledoes notreportresponsestothecommand,thenthe
20mspause
timeisrespected.
Duringcommandmode,duetohardwarelimitations,undersevereCPUloadtheserialportcanlosesome
charactersifplacedinautobaudingathighspeeds.Thereforeifyouencounterthisproblemfixthebaudratewith
+IPRcommand.Theflowcontrolincommandmodeisenabled.