Digital telephony
Bellamy, John
Digital telephony - New York: John Wiley & Sons 1982 - 526p.
0-471-08089-6
Telephone
D 681.327.8:621.395 / M2
Digital telephony - New York: John Wiley & Sons 1982 - 526p.
0-471-08089-6
Telephone
D 681.327.8:621.395 / M2