References
- 1. Orbell, A. G. 1981. Digital transmission in the local network. Paper presented at the International Conference on Telecommunications Transmission, London, March.
- 2. Ronayne, J. 1991. Introduction to digital communications switching, 2nd edn. Pitman and UCL Press.
- 3. International Standards Organization 1982. ISO/TC97: Information processing systems, open systems interconnection – basic reference model, draft international standard ISO/DIS 7498, April.
- 4. ITU-T Recommendations Q.310 to Q.332: signalling system R1.
- 5. ITU-T Recommendations Q.400 to Q.490: signalling system R2.
- 6. ITU-T Recommendations Q.251 to Q.300: signalling system no. 6.
- 7. ITU-T Recommendations Q.700 to Q.821: signalling system no. 7.
- 8. ITU-T Recommendations ...
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