LOCAL ACCESS ARRANGEMENTS

摘要

British Telecom's ISDN Pilot Service is a first step towards a full national service based on internationally agreed standards and linked to other networks as part of the future global ISDN.To take this first step it has been necessary to adopt interim standards and technology that serve as a stepping stone on a migratory path.We confidently expect to move rapidly along this path but the rate at which we will be able to do so will depend on commercial prospects,the availability of the complete standards and the speed with which new switching,transmission and terminal equipment can be developed.