Digital telecommunications : switching /
Open University.Centre for Continuing Education.
Open University.Faculty of Technology.
[Milton Keynes] [Open University Press]
[c1989]
Contents: Block 1 Introduction -- Block 2 Communicating Systems -- Block 3 Reliability, Traffic & Information -- Block 4 Digital Exchanges -- Block 5 Networks -- Audiovision Booklet -- Course Guide -- Index -- PT628/629 Mathematics Booklet -- Supplement to Block 4 -- 2 sound cassettes.