1. International Telecommunication Union (ITU), Transmission systems and media, general recommendation on the transmission quality for an entire international telephone connection; one way transmission time (recommendation G.114), Technical report, Telecommunication Standardization Sector of ITU, Geneva, Switzerland, March 1993.
2. R. Braden, S. Clark, S. Shenker, Integrated services in the internet architecture, RFC 1633, IETF, June 1994.
3. S. Blake, D. Black, M. Carlson, E. Davies, Z. Wang, W. Weiss, An architecture for differentiated services, RFC 2475, IETF, December 1998.
4. S. Shenker, C. Partridge, R. Guerin, Specification of guaranteed quality of service, RFC 2212, IETF, September 1997.
5. J. Wroclawski, Specification of the controlled-load network element service, RFC 2211, IETF, September 1997.