It will be necessary to ensure common interface specifications between the projects, co-ordinate deliveries of software between the projects, feed back one assessment of the quality of the deliverables and ensure that the feedback is properly progressed inside the projects. Other activities will be the interface between the project and other communities such as the relevant Standardisation bodies like the Internet Engineering Task Force (IETF), the ITU standardisation bodies etc. Yet a third sector will be the various user groups in other programmes with similar needs.