Method, device and system for off-line calling

Abstract

The invention discloses a method, device and system for internet protocol telephone off-line calling. The method includes the steps that a call request based on a calling party terminal of the internet protocol is received and includes address information of the calling party terminal; when a called party terminal based on the internet protocol is judged to be not on line, the calling request is sent to a third party gateway; the third party gateway sends the calling request to the called party terminal based on the internet protocol; after the called party terminal based on the internet protocol receives the calling request sent by the third party gateway, calling connection between the called party terminal and the calling party terminal based on the internet protocol is established according the address information, included in the calling request, of the calling party terminal based on the internet protocol. According to the technical scheme, the called party terminal based on the internet protocol can still receive the calling request initiated by the calling party terminal based on the internet protocol under the condition that the called party terminal based on the internet protocol is in an off-line state, and the calling connection can be rapidly established after the calling request is received, so that communication between a calling party and a called party is achieved without logging in a server again.

Description

technical field [0001] The present invention relates to network communication technology, in particular to a method, device and system for offline calling. Background technique [0002] IP (Internet Protocol, Internet Protocol) telephone is attracting attention as the "next generation telephone". Compared with the traditional voice phone, the IP phone communicates through the IP network, so it can provide more powerful functions, lower operating costs and higher call quality. [0003] Specifically, the IP phone needs to realize the corresponding call through the corresponding IP phone client, that is, the IP phone client needs to log in to the designated server, and establish a connection with the designated server, so as to facilitate the call signaling between the IP phone clients. Based on the established connection is relayed through the server. For example, when the calling party calls, it will send the corresponding call request to the server. After receiving the cal...

AI Technical Summary

Problems solved by technology

[0004] However, since the IP phone client is usually software running on devices such as tablet computers or mobile phones, sometimes the IP phone client may not start running in the device. At this time, the IP phone client does not log in to the server, but In the offline state, in this way, if the calling user initiates a call to the IP phone client, the corresponding IP call will not be reachable, resulting in the failure of the IP phone to connect and the call failure

Images