ITU-T E.138 Human factors aspects of public telephones to improve their usability for older people Series E: Overall Network Operation, Telephone Service, Service Operation and human Factors International operation - General provisions concerning users
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ITU-T E.138 Document Information:
Title
Human factors aspects of public telephones to improve their usability for older people Series E: Overall Network Operation, Telephone Service, Service Operation and human Factors International operation - General provisions concerning users
International Telecommunication Union/ITU Telcommunication Sector
Publication Date:
Jun 1, 2002
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