Call forwarding method under VoIP (voice over Internet protocol) of intelligent terminal
A technology of call forwarding and intelligent terminal, which is applied in communication supplementary services, transmission systems, electrical components, etc. It can solve problems such as adding interactive signaling, failing to successfully perform call forwarding, changing basic call procedures, etc., and achieving good compatibility , Simplified transfer process, simple logic effect
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[0074] Example 1:
[0075] This example is for the situation where the transferring party hangs up after talking to the transferred party, such as figure 2 As shown (in order to focus on the transfer process, the establishment and hold of the first call are simplified, but not fully illustrated), the call transfer process is as follows:
[0076] 1) The caller dials the called number and sends an INVITE message including the call (first call) to the VoIP server. The message contains information about the call: call-id1, from1, to1, received by the VoIP server The INVITE message is then sent to the called party; at this time, the called party rings, and the calling party hears the ringback tone. After the called party picks up the phone (for the mobile phone terminal, press the answer button, the same below), the connection with the calling party is established In the figure, RTP1 indicates that a call has been established between the caller and the called party, and RTP media strea...
Example Embodiment
[0085] Example 2:
[0086] This example is for the situation where the transferring party and the transferred party are not having a conversation (after the transferring party hears the transferred party's ringback tone) hang up, such as image 3 As shown, the difference in the process from hanging up after a call:
[0087] 1. After the transfer party hangs up, the VoIP server sends 180 RING to the caller, and the caller will hear the ring back tone.
[0088] 2. After the transfer party hangs up, the VoIP server immediately releases the first call and the second call.
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