I am currently working on implementing a skill for a doorcom device. This device will feature a camera stream with audio.
After reading through most of the Alexa Smart Home skill documentation, my takeaway is that Full duplex (two-way) communication is only possible using the RTCSessionController interface which is only supported by the Echo Show and Echo Spot.
Now I basically have two questions:
1. Is this correct? Two-way communication only possible via RTCSessionController interface?
2. Is this interface really only available for the Echo Show and Echo Spot? Can't an audio-only communication be established on a device like the Echo?
Thanks in advance for any help with this.