1 FLOOD, J. E.: 'Transmission Principles'. Chapter 2 of 'Transmission Systems', edited by FLOOD, J. E. and COCHRANE, P., IET Telecommunications Series No. 27, Stevenage, 1995.

2 DORWARD, R. M.: 'Digital Transmission Principles'. FLOOD, J. E.: 'Transmission Principles'. Chapter 2 of 'Transmission Systems', edited by FLOOD, J. E. and COCHRANE, P., IET Telecommunications Series No. 27, Stevenage, 1995, Chapter 7.

3 ANTTALAINEN, T.: 'Introduction To Telecommunications Network Engineering', Artech House, Norwood, MA, 1998, Chapter 4.

4 FLOOD, J. E.: 'Transmission Media'. Chapter 3 of 'Transmission Systems', edited by FLOOD, J. E. and COCHRANE, P., IET Telecommunications Series No. 27, Stevenage, 1995.

5 DUFOUR, I. G.: 'Local Lines The Way Ahead', British Telecommunications Engineering, Vol. 4, Part 1, April 1985, pp. 47 51.

6 KINGDOM, D. J.: 'Frequency-DivisionMultiplexing'. Chapter 5 of 'Transmission Systems', edited by FLOOD, J. E. & COCHRANE, P., IET Telecommunications Series No. 27, Stevenage, 1995.

7 REDMILL, F. J. and VALDAR, A. R.: 'SPC Digital Telephone Exchanges', IET Telecommunications Series No. 21, Stevenage, 1995, Chapter 10.

8 FERGUSON, S. P.: 'Plesiochronous Higher-Order Digital Multiplexing'. Chapter 8 of 'Transmission Systems', edited by FLOOD, J. E. & COCHRANE, P., IET Telecoinntunications Series No. 27, Stevenage, 1995.

9 SEXTON, M. J. and FERGUSON, S. P.: 'Synchronous Higher-Order Digital Multiplexing'. FERGUSON, S. P.: 'Plesiochronous Higher-Order Digital Multiplexing'. Chapter 8 of 'Transmission Systems', edited...