Result and Error Codes 8
Cellular Result Codes (+CRC)
The +CRC messages replace the unsolicited result code RING and provide more information about the type of
the incoming call. Use AT+CRC to enable these messages.
+CRING: ASYNC Asynchronous transparent
+CRING: SYNC Synchronous transparent
+CRING: REL
ASYNC
Asynchronous non-transparent
+CRING: REL SYNC Synchronous non-transparent
+CRING: FAX Facsimile
+CRING: VOICE Normal voice
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