A python-based automated call attendant, call blocker, and voice messaging system running on a Raspberry Pi. Screens callers and block robocalls and scams with a low-cost Raspberry Pi and modem.
Added REC_VM_MAX_DURATION and SERIAL_BAUD_RATE to configuration. SERIAL_BAUD_RATE for MT9234MU should be 115200 for the best audio quality from testing
Added dial tone detection to message recording
Disabled internal speaker on modem init. MT9234MU has built in speaker