2000 - Digital Telephony [Wiley Series in Telecommunications and Signal Processing] (Hardcover) ISBN-13: 9780471345718 ISBN-10: 0471345717 Genres: Computers & Technology, Engineering & Transportation ? 1982 - Digital Telephony (Hardcover) → Paperback, Hardcover ISBN-13: 9780471080893 ISBN-10: 0471080896 ? |