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Iridium 9523 Product Developers’ Guide is Subject to Change Without Notice
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8.12 Coordination of +CLCC and +CPAS responses
In order to determine the call state of the Iridium 9523, the +CLCC and +CPAS commands may be used.
The following table demonstrates how the output of the two commands, as well as the Extended Ring
Message, can be combined to provide a more detailed definition of the call state than any one of the
results provides by itself.
Call State +CLCC Response +CPAS Response Extended Ring Message
Idle +CLCC: 006 +CPAS: 000 or 003 n/a
Handset dialing - Voice +CLCC: 002 +CPAS: 000 or 003 n/a
ATD dialing - Voice command aborts call command aborts call n/a
ATD dialing - Data command aborts call command aborts call n/a
Alerting after ATD dialing - Voice command aborts call command aborts call n/a
Alerting after ATD dialing - Data command aborts call command aborts call n/a
Ringing - Voice +CLCC: 004 +CPAS: 003 CRING: VOICE
Ringing - Data +CLCC: 004 +CPAS: 003 CRING: DATA
In call - Voice +CLCC: 000 +CPAS: 000 or 003 n/a
In call - Data +CLCC: 000 +CPAS: 004 n/a
On hold - Voice +CLCC: 001 +CPAS: 000 or 003 n/a
Call waiting - Voice 2 or more call states,
one of which is 004
e.g. +CLCC: 000,004
+CPAS: 000 or 003 n/a
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