Magnet telephone converter

Abstract

The invention discloses a magnet telephone converter. In the magnet telephone converter, a power supply module is respectively connected to a ring-current module, a ringing controlling module, a busy-tone detecting module, a feeding detecting module, a subscriber loop module, and a single-chip computer controlling circuit. An FXO interface circuit is connected to the single-chip computer controlling circuit through the busy-tone detecting module, the feeding detecting module, and the subscriber loop module. A magnet interface circuit is connected to subscriber loop module through the ringing controlling module and a ring-current detecting module. The ring-current module is connected to the ringing controlling module. The magnet interface circuit, an interface converting circuit and the FXO interface circuit are sequentially connected. With the converter provided by the invention, in a railway section, cable communication is replaced by optical fiber communication; a telephone communication network based on VOIP is adopted; magnet telephone connection can be used on site in the rail way section, and magnet dedicated line connection can also be realized on a station side.

Description

technical field [0001] The invention relates to the field of telephone communication, in particular to a magneto telephone converter. Background technique [0002] In the telephone communication technology, magnetite telephones are often used in the interval along the railway. This telephone uses a magneto hand-operated generator as a ringing signal source and is equipped with a talking power supply. It has low requirements for lines and switching equipment, and has a long call distance, flexible, easy to use, and can be used for direct calls without a switch. [0003] Common power type telephone, the switching equipment supplies the power for calls and ringing signals centrally. It has a simple structure, but calls between users need to be manually transferred. [0004] The automatic telephone is formed by adding parts such as a dial pad or a keypad to the public electric telephone. It sends number selection information by dialing or pressing keys, and controls the switc...

AI Technical Summary

Problems solved by technology

It is easy to use and does not require manual switching, but the automatic switching equipment is more complicated

[0005] Previously, the magneto telephone set and the magneto exchange dispatcher constituted a dispatching communication system, which was interconnected with the ordinary telephone network, but the magneto exchange was bulky, expensive, and inflexible in use.

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