In the US, under current rules and practices, mobile phone and voice over IP listings are not included in telephone directories. Efforts to create cellular directories have met stiff opposition from several fronts, including those who seek to avoid telemarketers. Types Ī telephone directory and its content may be known by the colour of the paper it is printed on.White pages generally indicates personal or alphabetic listings.Yellow pages, golden pages, A2Z, or classified directory is usually a "business directory", where businesses are listed alphabetically within each of many classifications (e.g., "lawyers"), almost always with paid advertising.Grey pages, sometimes called a "reverse telephone directory", allowing subscriber details to be found for a given number.(These listings are often published separately, in a city directory, or under another name, for a price, and made available to commercial and government agencies.) Other colors may have other meanings for example, information on government agencies is often printed on blue pages or green pages. Telephone directories can be published in hard copy or in electronic form. In the latter case, the directory can be on physical media such as CD-ROM, or using an online service through proprietary terminals or over the Internet. In many countries directories are both published in book form and also available over the Internet. Printed directories were usually supplied free of charge. Selectphone (ProCD) Inc.) and PhoneDisc (Digital Directory Assistance Inc) were among the earliest such proucts. These were not a matter of a single click: PhoneDisc, depending on the mix of Residential, Business or both, involved up to eight CD-ROMs. īoth provide a reverse lookup feature (by phone number or by address), albeit involving up to five CD-ROMs. The first telephone directory, printed in New Haven, Connecticut, United States, in November 1878 The combination of phone number lookups, along with Internet access, was offered by some service providers VoIP (Voice over IP) was am additional feature. Telephone directories are a type of city directory. Books listing the inhabitants of an entire city were widely published starting in the 18th century, before the invention of the telephone. The first telephone directory, consisting of a single piece of cardboard, was issued on 21 February 1878 it listed 50 individuals, businesses, and other offices in New Haven, Connecticut that had telephones. The directory was not alphabetized and no numbers were associated with the people included in it.
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