E2406: Dynamic Procurement System for the accreditation of telecommunications service providers, ancillary services and supply of auxiliary hardware to the services for the entities that make up the purchasing group. The SDA is divided into the following categories: • Category 1: Unified communications, fixed voice and mobile voice. o Subcategory 1.1.: Services o Subcategory 1.2.: Equipment • Category 2: WAN and LAN interconnection networks, with associated equipment and service. o Subcategory 2.1.: Services o Subcategory 2.2.: Equipment The entities initially adhering to the SDA (Group A) are, • University of Barcelona (UB) • Autonomous University of Barcelona (UAB) • Polytechnic University of Catalonia (UPC) • Pompeu Fabra University (UPF) • Rovira i Virgili University (URV) • University of Lleida (UdL) • University of Girona (UdG) • Open University of Catalonia Foundation (UOC) • Sarrià Chemical Institute (URL-IQS) • Girona Science Park (PCiTG) • Consortium of University Services of Catalonia (CSUC) • Barcelona Supercomputing Center-National Center for Supercomputing (BSC-CNS) • University of Vic-Central University of Catalonia (UVic-UCC) • Center for Genomic Regulation (CRG) • Barcelona Biomedical Research Institute (IRBB) • Catalan Institute for Chemical Research (ICIQ) • International School of Commerce (ESCI-UPF) • Catalan Institute of Human Paleoecology and Social Evolution (IPHES) • Barcelona Biomedical Research Park Consortium (PRBB) • Barcelona Science Park (PCB) • Energy Research Institute of Catalonia Foundation (IREC) • UAB University Village (VILA-UAB) • ALBA Synchrotron (CELLS) • Ecological Research and Forestry Applications Center (CREAF) • Institute of Continuing Education (IDEC) The entities that will later be able to join (group B) are Universities, higher education centers, university centers attached to universities, research centers and science parks.