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Cable telephony is a form of digital telephony over cable TV type networks. A telephone interface installed at the customer's premises converting analog signals from the customer's in-home wiring to a digital signal, which is then sent over the cable connection to the company's Cable television headend switching center. The signal is then sent on to the public switched telephone network (PSTN). Cable telephone provides another revenue stream for cable television system operators and gives the consumer the convenience of combing several services on a single bill - such as paid television, internet and telephone services.[1] At times in the industry this is referred to as "triple play".
^ Richard Grigonis (ed) Cable Telephony in Computer Telephony Encyclopedia, Focal Press, 2000 pp.68-69
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