Digital telephony and network integration
Keiser, Bernhard E.
Digital telephony and network integration - - New York Van Nostrand Reinhold, 1985 - xvii,451 p. 22.5 cm - .
0-442-24659-519
Digital telephone systems
621.395:681.327.8 Kei
Digital telephony and network integration - - New York Van Nostrand Reinhold, 1985 - xvii,451 p. 22.5 cm - .
0-442-24659-519
Digital telephone systems
621.395:681.327.8 Kei