Phone Switches

A Black Box is a resistor (and often capacitor in parallel) placed in series across a telephone line to cause the telephone company equipment to be unable to detect that the telephone line has been answered. People who call the line which has the black box installed will not be billed for the telephone call. [...]...

One trick to defeat Caller-ID blocking is to forward your phone line to a friend who lives in another LATA. When your friend receives the anonymous phone call, have him use *69 Call Return to dial to offending party back. As he is now placing a long distance phone call, the telephone number of the [...]...

IntraLATA refers to any telephone call that is made between two separate local telephone companies that are close enough to not constitute a long-distance call. To fully understand IntraLATA and InterLATA systems, a user must understand that a LATA, or Local Access and Transport Area, is a local telephone company that is responsible for managing [...]...

Used Cisco Cisco is a worldwide leader in providing the hardware and software solutions of LAN and WAN. The head office of Cisco Company is in San Francisco and the branches and authorized dealers of Cisco currently exist in most of the countries in the world therefore Cisco hardware devices are used in every region [...]...

A PBX (Private Branch Exchange) is a small telephone switch that a company or organization owns. These organizations purchase PBXs to reduce the total number of telephone lines they need to lease from the telephone company. Without a PBX, a company has to lease one telephone line for every employee with a telephone. With a [...]...