Digital telephony
Bellamy, John C.
Digital telephony - 3rd - New Delhi: John Wiley & Sons, ©2002 - xxv, 643p.
9789814126359
9788126509294
Computer Science Engineering
621.385 / BEL
Digital telephony - 3rd - New Delhi: John Wiley & Sons, ©2002 - xxv, 643p.
9789814126359
9788126509294
Computer Science Engineering
621.385 / BEL