Digital telephony
Bellamy, John
Digital telephony - - New York John Wiley, 1982 - xviii,526 p. 23 cm - .
0-471-08089-628
Digital communications
Digital modulation
Telephone switching systems, Electronic
621.395 Bel(2)
Digital telephony - - New York John Wiley, 1982 - xviii,526 p. 23 cm - .
0-471-08089-628
Digital communications
Digital modulation
Telephone switching systems, Electronic
621.395 Bel(2)