I want to be able to establish two-way audio from my android based phone to a raspberry pi acting as an intercom over IP. My immediate reaction was to install a SIP client on the Pi that can wait for calls and be configured to automatically answer them.
- Is this the most effective way to achieve this task, or is there simpler solution?
- Can the SIP software be set up to wait for a call in this manner, and as it will be sitting behind a NAT device do I need to consider any STUN configuration?