PSTN (Public Switched Telephone Network)
The PSTN is the Public Switched Telephone Network. The PSTN is the entire telephone system, except for private telephone systems which are managed by their own PBX.
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- Telephone Network Interface Device
The telephone Network Interface Device (NID) is what connects your home telephone lines to the telephone company’s network. It is usually a small gray box located on the exterior of your home. It usually contains a modular phone plug that you can use for testing the line. They need both inside testing and outside testing. [...]...
- POTS (Plain Old Telephone Service)
POTS (Plain Old Telephone Service), also known as PSTN (Public Switched Telephone Service), refers to the dominant telephone service in most residential and small business environments. A telephone company controls POTS, which allows consumers to make and receive calls on one line at a time. POTS differs from PBX, T-1, T-3, ISDN, VOIP, and other [...]...
- Reverse Telephone Directory
A reverse telephone directory is a type of directory used in telephony to identify a person and his/her address by entering his/her phone number. A reverse telephone directory is the opposite of traditional telephone directories, such as Yellow Pages or caller ID, which allow a user to search for a person’s phone number by entering [...]...
- Who Invented the Telephone?
Alexander Graham Bell is commonly credited with the invention of the telephone. Bell filed a patent application for a working telephone on Feb. 14, 1876. Bell’s patent of the telephone has been successfully defended in five hundred and eighty-seven lawsuits, including five that reached the United States Supreme Court. Indeed, Alexander Graham Bell did invent [...]...
- Types of Mobile Telephone Systems
The main mobile telephone systems in the last twenty five years have been: YearMobile Telephone System 1981 Nordic Mobile Telephone (NMT) 1983 Advanced Mobile Phone System (AMPS) 1985 Total Access Communication Systems (TACS) 1986 Nordic Mobile Telephony (NMT) 1991 American Digital Cellular (ADC) 1991 Global System for Mobile Communication (GSM) 1992 Digital Cellular System (DCS) [...]...