Communication system based on call forwarding and VoIP/IM and method for answering call at roaming region

Abstract

The invention discloses a communication system based on call forwarding and VoIP / IM and a method for answering a call at a roaming region. The communication system comprises a cell phone or tablet computer, a VoIP media gateway module, a VoIP / IM server model, and a VoIP / IM client module, and is characterized in that the cell phone or tablet computer, the VoIP media gateway module, the VoIP / IM server model, and the VoIP / IM client module are successively connected. The communication system based on call forwarding and VoIP / IM and the method for answering a call at a roaming region achieves low communication fee. A user just needs to pay local voice communication fee if forwarding an incoming call to VoIP media gateway, a whole communication process is achieved by the VoIP and the user is not required to pay expensive roaming communication fee, thereby greatly reducing the communication fee. The communication system is easy to use and reliable in communication. The user is not required to carry a cell phone SIM card when answering a call at the roaming region with the communication system and is just required to install a VoIP / IM client on the cell phone or tablet computer.

Description

technical field [0001] The invention relates to the technical field of communication system application of call transfer and VoIP / IM, in particular to a communication system based on call transfer and VoIP / IM and a method for answering calls in a roaming area. Background technique [0002] Due to high roaming charges, many people dare not answer calls every time they go abroad, which brings a lot of inconvenience to communication. In order to save communication costs, users generally have two options: use other OTT software such as Viber or Skype to make calls, or go to roaming Buy a roaming phone card to change its mobile phone number, and notify all the people who have been in contact with the new number in time at the same time, which is more loaded down with trivial details. [0003] To solve the mobile phone roaming problem, some existing solutions on the market are either too expensive or inconvenient to use. The invention has the characteristics of relatively low res...

AI Technical Summary

Problems solved by technology

[0002] Due to high roaming charges, many people dare not answer calls every time they go abroad, which brings a lot of inconvenience to communication. In order to save communication costs, users generally have two options: use other OTT software such as Viber or Skype to make calls, or go to roaming It is cumbersome to buy a roaming phone card to change its mobile phone number after the land, and to notify all the contacts of the new number in time.

[0003] To solve the mobile phone roaming problem, some existing solutions on the market are either too expensive or inconvenient to use

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