What is the best way to barr incoming calls, Actually All I need is to disallow the buzzer ringing for Incoming calls. So it should work for all other cases.
Far as I can see there is no other way to disable incoming
calls except AT+CLCK but it reports an error for at+clck=”AI”,<0 or 1 or 2>. I have tried this command with and without a password, and during various phases of boot till CREG ok.
I dont want to do a ATH because this gives a busy to caller.
Barring incoming calls should work (what firmware version please?), alternatively you can set ringer volume to 0/Off with AT+CRSL, AT#TSVOL or change the ringer path with AT#SRP.
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