Specifications

INTRODUCTION
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17 ATCommandsforHSPA‐H5Modems
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 Theresponsetothetestcommand(trailing=?)maychangeinthefuturetoallo w thedescriptionofnew
valuesandfunctions.
Note:Issuingthereadcommand(trailing?)causesthecommandtobeexecuted.
 Whetherornottheequipmentimplementstheactioncommand(inthiscaseissuing
thecorresponding
testcommand‐trailing=?‐returnstheOKresultcode),and,ifsubparametersareassociatedwiththe
action,therangesofsubparametersvaluesthataresupported.
Actioncommandsdonotstorethevaluesofanyoftheirpossiblesubparameters.Moreover:
Ifallthesubparametersofaparametertypecommand+CMD(or#CMDor$CMD)areoptional,issuingAT+CMD=<CR>(or
AT#CMD=<CR>orAT$CMD=<CR>)causestheOKresultcodetobereturnedandthepreviousvaluesoftheomitted
subparameterstoberetained.
StringTypeParameters 
Astring,enclosedbetweenquotesornot,isavalidstringtypeparameterinput.According toV.25terspace
charactersareignoredonthecommandlineandmaybeusedfreelyforformattingpurposes,unlesstheyare
embeddedinnumericorquotedstringconstants.Thereforeastringcontainingaspacecharacterhas
tobe
enclosedbetweenquotestobeconsideredavalidstringtypeparameter.ForexampletypingAT+COPS=1,0,"A1"is
thesameastypingAT+COPS=1,0,A1;typingAT+COPS=1,0,"ABB"isdifferentfromtypingAT+COPS=1,0,ABB.
Astringisalwayscasesensitive.
Somecommandsrequireyoutoalwaysplacetheinputstringparameterswithin
quotes.Whenthisisrequired,the
commanddescriptionsexplicitlytellyouso.
CommandLines
Acommandlineismadeupofthreeelements:theprefix,thebodyandtheterminationcharacter.
Thecommandline prefixconsistsofthecharacters“AT”or“at”.Torepeattheexecutionoftheprevious
commandline,usethecharacters“A/”or“a/”orAT#/orat#/.
UsingparameterS3,you
canselecttheterminationcharacter.Thedefaultis<CR>.
Thestructuresofthecommandlineare:
 ATCMD1<CR>whereATisthecommandlineprefix,CMD1isthebodyofabasiccommandand<CR>isthe
commandlineterminatorcharacter.
Thenameofthecommandneverbeginswiththecharacter“+”
 ATCMD2=10<CR>where10isasubparameter.
 AT+CMD1;+CMD2=,,10<CR>Thesearetwoexamples ofextendedcommandsTheyaredelimitedwith
semicolon.Inthesecondcommandthesubparameterisomitted.
Thenameofthecommandalwaysbeginswiththecharacter“+”.
 +CMD1?<CR>Thisisareadcommandforcheckingcurrentsubparameter values.
 +CMD1=?<CR>Thisisatest
commandforcheckingpossiblesubparametervalues.
Thesecommandsmightbeperformedinasinglecommandlineasshownbelow:
ATCMD1CMD2=10+CMD1;+CMD2=,,10;+CMD1?;+CMD1=?<CR>
 Itisrecommendedtoseparatethebasiccommands andtheextendedcommandsintodifferentcommandlines.