A secure telephone is a telephone that provides voice security in the form of end-to-end encryption for the telephone call, and in some cases also the mutual authentication of the call parties, protecting them against a man-in-the-middle attack. Concerns about massive growth of telephone tapping incidents lead to growing demand for secure telephones.
The practical availability of secure telephones is restricted by several factors; notably politics, export issues, incompatibility between different products (the devices on each side of the call have to talk the same protocol), and high (though recently decreasing) price of the devices.
Read more about Secure Telephone: Well Known Products, VoIP and Direct Connection Phones, Historically Significant Products
Famous quotes containing the words secure and/or telephone:
“I do esteem individual liberty above everything. What is a nation for, but to secure the maximum of liberty to every individual? What do you think a nation is?—a big business concern?”
—D.H. (David Herbert)
“A woman spent all Christmas Day in a telephone box without ringing anyone. If someone comes to phone, she leaves the box, then resumes her place afterwards. No one calls her either, but from a window in the street, someone watched her all day, no doubt since they had nothing better to do. The Christmas syndrome.”
—Jean Baudrillard (b. 1929)