I have an HL7692 with V2.19 firmware.
I make a voice call in the usual way from the HL7692 to my mobile – ATDT;
The modem responds with OK and the my phone starts ringing.
However, when I poll for phone activity on the HL7692 via AT+CPAS, it always returns +CPAS: 4, even though I have not yet answered the call on my mobiIe. Shouldn’t it return +CPAS: 3 and only return +CPAS: 4 when the phone call has been answered, otherwise how can I determine from the HL7692 that the outgoing call has been answered?
The audio-related commands all seem to default to values which provide audio but I do not seem to get any audio. Is there anything else that I need to send to the modem to get audio for voice calls?