Multimedia : strategic implications for telecoms operators / Paul Knott; edited by Kate Gentles
Interconnection : developments in costing and accounting methods: wednesday 17th-18th November 1997: the Marriott Hotel, Amsterdam / org. IBC UK Conferences
National leased circuits : carrier tariffs, discount policies and service levels 1997 / Josie Sephton and Gwyn Evans
Interconnection / Richard Cranston