Method, device and system for managing group calling business emergency call
A group call and emergency call technology, applied in the field of communications, can solve problems such as the inability to meet the needs of the trunking group call service and the inability of the dispatcher to realize emergency mode control, and achieve the effect of increasing flexibility and realizing control.
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[0040] In order to make the object, technical solution and beneficial effect of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings.
[0041]When an emergency or important situation occurs in the cluster group, or when all cluster group members need to be notified due to an emergency situation, the scheduler can send an emergency mode instruction to the network side. The network can predefine a series of DTMF (Dual Tone Multi Frequency) codes to identify the emergency mode indication. The DTMF code value can be determined according to the specific operation, but it cannot be related to the start of speech, the end of speech, or the clearing of the emergency mode indication. The sequence is the same.
[0042] figure 2 A signaling flow chart of an embodiment of starting the emergency mode provided by the present invention is applicable to the case where the dispatcher is a ...
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