Digital telephony
Bellany, John C
Digital telephony - 3 - John Wiley & Sons Inc., New York 2002 - 635
3093
Wire telephony; Electronics and communication engineering; Applied physics
621.385 BEL-D3
Digital telephony - 3 - John Wiley & Sons Inc., New York 2002 - 635
3093
Wire telephony; Electronics and communication engineering; Applied physics
621.385 BEL-D3