2001 - Sonet and T1 Architectures for Digital Transport Networks [2nd Edition] (Hardcover) → Hardcover ISBN-13: 9780130654168 ISBN-10: 0130654167 Genre: Computers & Technology ? 1997 - Sonet T1 Architectures for Digital Transport Networks (Hardcover) → Hardcover ISBN-13: 9780134475905 ISBN-10: 0134475909 Genre: Computers & Technology ? |