Communication system

Abstract

The invention discloses a communication system which comprises a program-controlled switchboard. The program-controlled switchboard is connected with a traditional program-controlled telephone network; and the communication system further comprises a first data exchange card, a second data exchange card, a VOIP server and a network telephone terminal, wherein, the first data exchange card is electrically connected with the program-controlled switchboard, the second data exchange card is electrically connected with the VOIP server, the first data exchange card is connected with the second data exchange card through a network, and the VOIP server is connected with the network telephone terminal through a network. The communication system enables the traditional telephone to be mutually communicated with the network telephone, and no matter where a user is, the person can be found by dialing the same extension telephone number for communication; the mutual communication is free, therefore, a great amount of cost is saved for a company; the maintenance of the system is simple, and the extension and the change are easy; and the tedious maintenance work caused by frequent changes of the persons is avoided.

Description

technical field [0001] The invention relates to a communication system. Background technique [0002] At present, the communication system used by most companies is the traditional telephone system. The traditional telephone system includes program-controlled switches, telephone lines, telephones, and telephone wiring cabinets. When the traditional telephone system needs to add telephone extensions, it is necessary to expand the program-controlled switchboard and to carry out additional wiring. In addition, when the staff's seat is moved, it is necessary to jump the line in the telephone wiring cabinet. Maintenance work is quite tedious. Moreover, once an employee is on a business trip (such as: going abroad), he cannot find the person by dialing his phone number. Even if the person can be found by dialing a mobile phone number that can roam, the cost of the company is often increased due to expensive mobile phone international roaming charges. [0003] And network phone ...

AI Technical Summary

Problems solved by technology

If you want to connect the two, you need to purchase services (such as: skype out points) from the Internet phone system provider, which makes the company need to spend a lot of money

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