Quectel M26 & M35 audio recording

We got multiple GSM modems, mostly M26 & M35 series. We use them to receive SMS messages. But now we need to record voice from caller. How one record audio and download it from modem? I’ve found AT+QAUDRD command but it’s unclear where the result file will be stored and how to get it to process elsewhere. Please help.
Most of our modems are:

The recording of M26 module can be referred to the following files, which have details about “AT+QAUDRD”, including examples for reference.


If you want to record the caller’s voice, the M35 can’t do that,due to the underlying logic,the M35 module does not support recording during a call.