Artificial audio text phone service

Dedicated phone numbers for text info. Although this is an audio to audio service on both sides, the caller and the receiver, this service transmits text only.

Your phone converts the conversation into text and tells you what it understood. After approval (or in later versions when it is quite sure it got you right, without your approval) it sends the text, and receives the response (whether from a computer or from an actual human) in text. If there is a human on the other side, they too can hear and respond in audio only, with the computer translating the conversation into text and transmitting it. Reducing the bandwidth needed to almost zero for many many conversations.

Good for automated services.

Perhaps the app on your phone will also discuss what you want to say, and shorten it nicely and concisely into a few words.

In the rare case of a recorded voice message needed, it can revert to audio mode, and behave almost like a regular telephone line for a short while with an answering machine on one of the sides.