Telephone system including telephone gateway and its function implementing method

Abstract

The present invention provides a telephony gateway, including its telephony system as well as a method for implementing gateway function, it is possible to save call cost using IP telephone (VoIP), and when the other party is not IP telephone, there is no need to pay service cost to IP telephone owner. The telephone system comprises IP telephone equipment and telephone gateway. The IP telephone equipment connects to a IP network, and has a first IP address for supporting a first IP telephone protocol; the telephone gateway connects between a telephone network and the IP network, corresponding to a telephone number and a second IP address, and receiving call incoming signal from the telephone network and transforming to an IP telephone signal which accords with the first IP telephone protocol, then transmitting to the IP telephone equipment by the IP network, so as to establish a telephone online. Wherein, the objective telephone number of the call incoming signal is the above mentioned telephone number, the objective IP address of the IP telephone signal is the first IP address.

Description

technical field [0001] The invention relates to a telephone communication device and method, in particular to a telephone gateway, a telephone system including it and a method for executing the gateway function. Background technique [0002] For people who often travel abroad or travel abroad, if they often communicate with China by telephone, it will cost a lot of international communication fees. For example, if you use a mobile phone, you need to pay for international roaming charges whether you make a call back to China or receive a call from China; International call charges. Although, there are Internet Protocol (Internet Protocol, called for short IP) telephone (Voice over IP, called for short VoIP) service now, can use IP telephone abroad, contact with the caller who also uses IP telephone in China via the Internet, to save calls. However, if the domestic caller does not have an IP phone or is inconvenient to use an IP phone, the foreign caller still needs to call ...

AI Technical Summary

Problems solved by technology

In this case, you still have to pay the Skype carrier service fee

In addition, when we are abroad, if the other party calls our home or company's fixed-line phone in China, it cannot be transferred to the IP phone we use abroad, resulting in missed calls

Images