MAP THE PHONE DEMO FIRST

1. Watch once for the user experience: how a call starts, how audio is handled and how the call ends.
2. Watch again for the components. Record the board, cellular or network hardware, power source and software bridge only when the creator identifies them.
3. Map the audio path in both directions. Mark every connection that is undocumented and needs confirmation.
4. Check account requirements, service costs and current compatibility from the linked creator documentation before buying parts.

Board and communication hardware: __________
Power source and documented requirements: __________
Audio input/output path: __________
Software bridge and account requirements: __________
Original code or wiring reference: __________
Unanswered question to resolve before building: __________

1. Use your own test calls with informed participants. Keep personal recordings out of shared logs.
2. Test disconnects, failed responses and the stop control. Verify the documented power and wiring before powering the build.