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A method, terminal and system for implementing call transfer

A technology of call transfer and transfer terminal, which is applied in the field of communication and can solve problems such as inability to realize call transfer

Active Publication Date: 2015-09-23
HYTERA COMM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The mobile terminal sends the target address to the dispatcher to establish the call forwarding setting. When the call is forwarded, the dispatcher sends the target address to the calling terminal to realize the call forwarding. The mobile terminal is in a passive state during the call dispatching process and is subject to In the conventional communication system without dispatching station, the mobile terminal can only realize the basic call service and information transmission function, and cannot realize call transfer

Method used

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  • A method, terminal and system for implementing call transfer
  • A method, terminal and system for implementing call transfer
  • A method, terminal and system for implementing call transfer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] figure 1 Shown is a flow chart of Embodiment 1 of a method for implementing call transfer in the present invention, including:

[0091] Step 101: When the requesting terminal has a call access exception, set call transfer request information and send it to the target terminal.

[0092] The request terminal call access exception includes many situations. When encountering situations such as leaving the service area, battery alarm, and call being busy, the requesting terminal can automatically trigger the establishment of a call transfer request; when encountering a business trip, the user can also set the establishment of a trigger call transfer request.

[0093] When the call access is abnormal, the requesting terminal sets the call transfer information, specifically setting the call transfer request protocol data frame, and specifically defines each information unit in the call transfer request protocol data frame.

[0094] The frame structure of the Control Signalin...

Embodiment 2

[0138] Figure 7 Shown is a flow chart of Embodiment 2 of a call transfer method of the present invention. Compared with Embodiment 1, Embodiment 2 further verifies the correctness of authorization information, specifically including:

[0139] Step 701: When the requesting terminal has a call access exception, set call transfer request information and send it to the target terminal.

[0140] Set the call transfer request information, specifically, set the call transfer request protocol data frame. Among them, the definition of the last block LB, protection flag PF, control signaling operation code CSBK Opcode, manufacturer identification code MFID, group call / single call G / I, call transfer operation code OC, transfer address number NOA and address information unit As described in Embodiment 1, details are not repeated here.

[0141] Table 10 shows the definition of an authorization code (Authorization Code, AC) information unit, which occupies a length of 8 bits and is repre...

Embodiment 3

[0159] A method for canceling call forwarding, comprising:

[0160] Step 1: When the requesting terminal restores call access to normal, set call transfer cancellation information and send it to the target terminal.

[0161] When the requesting terminal returns to the normal state of the network or sufficient power, etc., the set call forwarding cancellation message is sent to the target terminal, specifically the setting call forwarding cancellation protocol data frame.

[0162] Among them, the last block LB, protection flag PF, control signaling operation code CSBK Opcode, manufacturer identification code MFID, group call / single call G / I, forwarding address number NOA and address information unit definitions are the same as those in Embodiment 1, and are not mentioned here Let me repeat.

[0163] According to the definition of the call forwarding operation code OC information element in Table 6, the value of OC should be set to 01.

[0164] Step 2: The target terminal read...

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Abstract

The invention discloses a method, a terminal and a system of achieving call forwarding. The method comprises when a call admission of a request terminal appears abnormal, setting and sending a call forwarding request message to an objective terminal; the objective terminal reads a call forwarding signal of the call forwarding request message and judges whether the call forwarding signal is right or not, if the call forwarding signal is right, the objective terminal reads an address of the objective terminal of the call forwarding request message; the objective terminal judges whether the address of the objective terminal is right or not, if the address of the objective terminal is right, the objective terminal reads a forwarding address signal and sets forwarding terminal address according to the forwarding address signal and sets a call forwarding success response message to the request terminal; the request terminal receives call forwarding success response message and set up a call forwarding and provides a terminal and a system which are corresponding to the method. On the condition that dispatching desk is not provided, mobile terminals can achieve call forwarding, and a user can adopt different forwarding address signals to meet requirements of different application scenarios according to requirements.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, terminal and system for realizing call transfer. Background technique [0002] The trunking communication system is a radio mobile communication system that realizes multi-user sharing of multi-channels by way of dynamic channel assignment. The system is generally composed of a mobile terminal and a dispatcher, and has functions such as dispatching, group calling and priority calling. In the current trunking communication system, the dispatcher is mainly responsible for the scheduling and intelligent allocation of mobile terminals. When the mobile terminal is busy or the battery is exhausted and cannot be connected to the call, the dispatcher transfers the call of the mobile terminal according to the demand. [0003] After the mobile terminal registers at the dispatching station, it applies to the dispatching station for call transfer, and the dispatchin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/16
Inventor 徐燕谢汉雄于洋尹瑞华杨帆
Owner HYTERA COMM CORP