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An automatic number announcement circuit (ANAC) is a component of a central office of a telephone company that provides a service to installation and service technicians to determine the telephone number of a telephone line. The facility has a telephone number that may be called to listen to an automatic announcement that includes the caller's ...
If old cell phones aren't the only vintage items you have stored away in your home, take a look at what some of the most valuable VHS tapes are going for. Related Articles AOL
Advanced Mobile Phone System (AMPS) was an analog mobile phone system standard originally developed by Bell Labs and later modified in a cooperative effort between Bell Labs and Motorola. It was officially introduced in the Americas on October 13, 1983, [ 1 ] [ 2 ] [ 3 ] and was deployed in many other countries too, including Israel in 1986 ...
Defunct mobile phone companies of the United States (2 C, 32 P) I. ITT Inc. (1 C, 38 P, 1 F) M. MCI Communications (12 P) O. Oak Industries (1 C, 5 P)
Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.
A similar reallocation was employed in 1989 to expand analog cellphone service, having previously eliminated TV channels 70-83 at the uppermost UHF frequencies.This created an unusual situation where old TV tuning equipment was able to listen to cellular phone calls, although such activity was made illegal and the FCC prohibited the sale of future devices with that capability.
Local number portability allows an existing number to be moved to VoIP (or, in some countries, a mobile telephone) which can then be freely moved out of the original geographic location while keeping the directory listing and service area unchanged. A foreign exchange office (FXO) device plays the role of an analog phone.
AOL Mail welcomes Verizon customers to our safe and delightful email experience! Check your Mail Try the AOL app Get Ad-Free Mail Get Desktop Gold Download and ...
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