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:
“It is essential that none of the other great powers shall secure these islands [Hawaii]. Such a possession would not consist with our safety and with the peace of the world.”
—Benjamin Harrison (1833–1901)
“My sole inspiration is a telephone call from a director.”
—Cole Porter (1893–1964)