Digital telephony /
Bellamy, John,
Digital telephony / John Bellamy - 3rd edition - 643 pages : 24 cm. - Wiley series in telecommunications and signal processing . - Wiley series in telecommunications and signal processing .
0471345717 9780471345718
Digital telephone systems
Digital telephony / John Bellamy - 3rd edition - 643 pages : 24 cm. - Wiley series in telecommunications and signal processing . - Wiley series in telecommunications and signal processing .
0471345717 9780471345718
Digital telephone systems