Digital telephony /
Bellamy, John, 1941-
Digital telephony / John Bellamy. - 2nd ed. - New York : Wiley, c1991. - xix, 572 p. : ill. ; 25 cm.
Includes index
0471620564
90037906
Digital telephone systems.
621.385 / BED
Digital telephony / John Bellamy. - 2nd ed. - New York : Wiley, c1991. - xix, 572 p. : ill. ; 25 cm.
Includes index
0471620564
90037906
Digital telephone systems.
621.385 / BED