1. ISDN Das diensteintegrierende digitale Nachrichtennetz;Bocker,1990
2. ITU-T Recommendation G.703, G.704, G.705, 1990.
3. ITU-T Recommendation I.363 B-ISDN ATM Adaptation Layer (AAL) Specification, March 1993.
4. ATM Forum ATM User Network Interface UNI Specification, Version V3.1, 1995.
5. ATM Forum Technical Committee Circuit Emulation Service Interoperability Specification, AF-SAA-0032.0000, September 1995.