A method, device and system for offline calling
An offline, call request technology, applied in the field of network communication, can solve the problems of call failure, unreachable IP call, unreachable IP phone, etc.
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Embodiment 1
[0048] In this first embodiment, the PUSH function that comes with the system can be used to ensure that the IP phone client as the called user terminal is offline or not activated, and can also receive an incoming call request (that is, a call initiated by the calling user terminal) request), that is, to implement an IP call request through a PUSH message. Specifically, such as figure 2 As shown, the corresponding processing may include:
[0049] Step 21, the calling party (that is, the calling user terminal based on the Internet Protocol) logs into the IP telephony server, and the server sets the calling party ID status as online, so that it can query whether it is online when it is the called user terminal.
[0050] Step 22, the calling party initiates a call request to the called party (that is, the called user terminal based on the Internet protocol), and the corresponding call request message will be sent to the server.
[0051] Step 23: After receiving the call reque...
Embodiment 2
[0057] In the second embodiment, the short message gateway can be used to ensure that the IP phone client as the called user terminal is offline or not activated, and can also receive the call request initiated by the calling user terminal. Specifically, such as image 3 As shown, the corresponding processing may include:
[0058] Step 31, the calling party logs into the IP phone server, and the server sets the ID status of the calling party as online.
[0059] Step 32, the calling party initiates a call request to the called party, and a corresponding call request message is sent to the server.
[0060] Step 33, the server receives the call request, finds out that the called party is not online according to the ID of the called party in the call request, and then forwards the call request to the short message gateway (or short message gateway).
[0061] Step 34: After receiving the call request, the short message gateway directly packs the call request into a short message ...
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