This looks cool! It's not as simple as just "switching it on" though. Past experience suggests Optus won't launch this feature as there's not a huge market for it at the moment. Look at visual voicemail as an example, an amazing service that enriches a users mobile experience but it's not well known enough to push Optus to provide it
I can't say that I've heard any talk around voice activated calling for the Google Nest.
It's not something that's currently on our radar.
Can you please get this on the dev radar? This is literally something that would make me switch to Telstra
You are already an ISP, a mobile provider and a billing provider. Surely there is an API for this...