Experiences with the IDA, and plans for an ISDN infrastructure at University College London

A description is given of the experience at University College London (UCL) with the British Telecom IDA prototype of a basic rate ISDN service. This experience has been limited to the use of Group IV facsimile, an early experiment in the provision of an X25 gateway to IDA, and its access from workstations via the IDA. As part of an experimental infrastructure, UCL is putting in much more extensive multivendor facilities which will use the ISDN as soon as it becomes available in the UK. The authors report on their efforts to get approval from the relevant authorities for experimental equipment and discuss some of the research questions they expect to address in the testbed