Interesting looking device.
Has a kind of Commodore 64, Commodore Pet, Apple IIe, TRS-80, IBM Peanut look to it.
Is there a built in modem to it?
Googling found this:
The Tonto was the same model as the ICL OPD and the Telcom ComputerPhone which was intended for Australian market. Like the ICL version, the Tonto was sold only in the U.K. It was born thanks to a collaborative venture between British Telecom, ICL and Sinclair Research. The designers idea was to build a centralized desktop information system able to access online services, mainframes and other similar systems through the British Telecom network.
It was essentially a Sinclair QL at heart, featuring the same 68008 processor. Applications software were stored in plug-in ROM cartridges or Microdrive tapes. Sadly, both of them were not compatible with QL interfaces and microdrives format and the specific Tonto O.S. couldn't run ordinary software made for the QL, even in BASIC language.
However, the most interesting aspect of the Tonto was its telephony integration. Its internal modem (300 an 1200/75 baud) could manage two telephone lines, and the Tonto, could be used as an intelligent answering machine thanks to its synthesised voice response (but no record capabilities), a Prestel terminal for Videotext services as well as a specialized peripheral and multi-protocols terminal for mainframes. Several interconnected Tonto's also could automatically exchange files and information between them.
Below are prices for the Tonto at is launch, taken from a BT promotional video for the Tonto, dated 29-4-1985.
£1245 Basic Mono Machine
£1375 Basic Mono Machine with Xchange
£1675 Colour Machine
£1805 Colour Machine with Xchange
These are all Excluding VAT.
So these are the final prices.
£1462 Basic Mono Machine
£1615 Basic Mono Machine with Xchange
£1968 Colour Machine
£2120 Colour Machine with Xchange
Then you had an optional printer and many optional ROM packs. This was quite an expensive piece of desk accessory in its day.