ECN 1
ECN 1 : Emergency Communications Network. ECN is a UK private switched telephone network, providing a robust emergency communication system via dedicated PABX (private automatic branch exchange), i.e. switches. It links Local Authorities (LAs, Looked it up elsewhere in the source) with emergency service headquarters and a number of central government departments. The network is managed by the Central Sponsor for Information Assurance (CSIA, Looked it up elsewhere in the source) in the Cabinet Office