Index of telephone-related articleswikipedia
These are some of the links to articles that are telephone related.

Harmonised service of social value

harmonised service of social valueharmonised services of social valueharmonised European number for child helplines, 116111

Answering machine

answering machinetelephone answering machineanswering machines

Bell Labs

Bell Telephone LaboratoriesBell LaboratoriesAT&T Bell Laboratories

Carterfone

any lawful deviceruling which permitted third-party devicesCarterfone ruling

Elisha Gray and Alexander Bell telephone controversy

patent lawsuit with Bell Telephone CompanyGray-Bell telephone controversyfiled patents

Federal telephone excise tax

federal telephone excise taxtelephone federal excise taxexcise tax on long-distance phone service