Telephone User Interface is a term used for all the user interaction with the telephone, typically through interactive Voice Response Systems. This name apparently was coined to match GUI - for Graphical User interface. It is shortened as TUI and pronounced like the GUI - Tooey.
Between end users, transmissions across a network may be carried by fiber optic cable, land line cable, point to point microwave or satellite relay.
The very early history of the telephone is a confusing morass of claim and counterclaim, which was not clarified by the huge mass of lawsuits which hoped to resolve the patent claims of individuals.
The modern telephone is the result of work done by many hands, all worthy of recognition of their addition to the field.
Unlike a mobile phone, a cordless telephone is considered to be landline because it is only useable with a short distance of a base station connected to a fixed phone line.
It is important to note that there is probably no one "inventor of the telephone." The modern telephone is the result of work done by many hands, all worthy of recognition of their addition to the field.
See Invention of the telephone for a discussion of each of the critical technologies and their inventors.