ISU AT Command Reference

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ISU AT Command ReferenceInformative Examples13.4 Disconnecting a Data CallAT+CBST=6,0,1(asynchronous modem 4800 bps and IRLP)OKAT+CR=1(enable reporting)OKATD1234567890(dial remote modem)+CR: REL ASYNCCONNECT 9600 (call connected at DTE rate of 9600)< ... data transfer ... > (send escape sequence)OKATH0(hangup call)OK13.5 Originating and Disconnecting a Voice CallAn example of how to make and disconnect a voice call is given below:ATD1234567890;(dial remote phone)OK(call connected; phone stays in command mode)< ... conversation ... >ATH(hangup call)OK13.6 Coordination of +CLCC and +CPAS responsesIn order to determine the call state of the ISU, the +CLCC and +CPAS commands may be used. Thefollowing table demonstrates how the output of the two commands, as well as the Extended RingMessage, can be combined to provide a more detailed definition of the call state than any one of theresults provides by itself.Call State +CLCC Response +CPAS Response Extended Ring MessageIdle +CLCC: 006 +CPAS: 000 or 003 n/aHandset dialing - Voice +CLCC: 002 +CPAS: 000 or 003 n/aATD dialing - Voicecommand aborts call command aborts call n/aATD dialing - Datacommand aborts call command aborts call n/aAlerting after ATD dialing - Voice command aborts call command aborts call n/aAlerting after ATD dialing - Data command aborts call command aborts call n/aRinging - Voice +CLCC: 004 +CPAS: 003 CRING: VOICERinging - Data +CLCC: 004 +CPAS: 003 CRING: DATAIn call - Voice +CLCC: 000 +CPAS: 000 or 003 n/aIn call - Data +CLCC: 000 +CPAS: 004 n/aOn hold - Voice +CLCC: 001 +CPAS: 000 or 003 n/aCall waiting - Voice +CLCC: 005 +CPAS: 000 or 003 n/aVersion 2.6March 30, 2006 90
ISU AT Command ReferenceInformative Examples13.7 Usage examples of +CCFC commandAT+CCFC=0,2,,,3(query unconditional call forwarding for data)+CCFC:0,1,””,255(not active)AT+CCFC=1,2+CCFC:1,1,””,255(query mobile busy call forwarding for voice)(active)AT+CCFC=0,3,”881631012345”,145,1 (register unconditional call forwarding ofinternational number for voice)OKBefore you register for mobile busy call forwarding, you need to erase theregistration of unconditional call forwarding if it is set previously, or viseversa.AT+CCFC=0,4 (erasure of unconditional call forwarding for voice)OKAT+CCFC=1,3,”881631012345”,145,1 (register mobile busy call forwarding forvoice)OKVersion 2.6March 30, 2006 91
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ISU AT Command ReferenceIntroductio
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ISU AT Command ReferenceModem Overv
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