Telephone 637 Law and legislation 339 Telecommunication 182 History 125 Consumer protection 90 Telegraph 81 Rates 74 Directories 72 Telephone companies 59 Telephone selling 58 Privacy, Right of 56 Telecommunication policy 56 Social aspects 50 Telemarketing 49 Fraud 48 Competition 46 Officials and employees 45 Patent infringement 45 Emergency reporting systems 44 Trials (Commercial crimes) 44 Cable television 41 Corrupt practices 41 Taxation 40 General 39 Long distance telephone service 38 Patents 36 Corporations 35 Administrative agencies 34 Information services 34 Internet 33