CommandformatAllcommandsexceptA/ A/A/mustbeginwiththeprexAT,followedbythecommandletter,andmustendwiththeEnterkey.Spacesareallowedinthecommandstringtoincreasereadability,butthemodemignoresthemwhileexecutingacommand.Allcommandsmaybetypedineitheruppercaseorlowercase,butnotinmixedcase.Acommandissuedwithoutaparameterisconsideredtohaveparameter“0”.Examples:A AATL[Ent TL[EntTL[Enter] er]er]Thiscommandcausesyourmodemtolowerthevolumefromitsspeaker.RefertothefollowingtablesofATcommandsandextendedATcommands.
Table3.Modemcommandlist
CommandDescriptionSyntaxValues
Z Z
ZResettodefault
conguration
Z Z
Z
+FCLASS +FCLASS
+FCLASSSelectActiveService
Class
+F +F
+FCL CL
CLAS AS
ASS S
S=<Mode><Mode>
0:SelectDataMode
1:SelectFacsimileClass1
Mode
1.0:SelectFacsimileClass1.0
Mode
8:SelectVoiceMode
+VCID +VCID
+VCIDCallerID+VC +VC
+VCID ID
ID=<pmode><pmode>
0:DisableCallerIDreporting
1:EnablesCallerIDwith
formattedpresentationtothe
DTE.
2:EnablesCallerIDwith
unformattedpresentationtothe
DTE.
+VRID +VRID
+VRIDReportRetrievedCallerID+VRID +VRID
+VRID=<pmode><pmode>
0:ReportsCallerIDwith
formattedpresentationtothe
DTE.
1:ReportsCallerIDwith
unformattedpresentationtothe
DTE.
\N \N
\NOperatingMode\N \N
\N<mode><mode>
0:Selectsnormalspeed
bufferedmode(disables
error-correctionmode)
andforces&Q6(selects
asynchronousoperationin
normalmode.)
1:Sameas0.
2:Selectsreliable(error
correction)modeandforces
&Q5(themodemwilltryto
negotiateanerrorcorrected
link).Themodemwillrst
52UserGuide