Telecommunications services

Find in this collection the following articles: Telecommunications services, Telephone services, Data transmission services with packet switching, Data transmission services with circuit switching, Telex services, Telegraph services, Facsimile services, Services by private leased circuits, Electronic mail services, Telephone voice mail services, Direct permanent information retrieval and database server services, Electronic data interchange services, Value added/enhanced facsimile services, including recording and retransmission and recording and retrieval, Code and protocol conversion services, Direct information and/or data processing services (including transaction processing)