Call service implementation method and device, electronic equipment and readable medium
A technology of call service and implementation method, applied in the field of communication, can solve the problems of no subscription registration status information, terminal users cannot access IMS normally, etc., and achieve the effects of reducing network signaling traffic, reducing device CPU consumption, and improving performance
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Embodiment 1
[0073] This embodiment relates to a method for implementing a call service. It is used to solve the above problems, so as to reduce the buffer resource consumption of the enhanced mobile switching center, reduce network signaling traffic, and at the same time ensure that the call service of the user terminal can be completed normally and quickly.
[0074] The implementation details of the method in this embodiment are described in detail below, and the following content is only for the convenience of understanding the implementation details of the solution, and is not necessary for implementing the solution.
[0075] Figure 5 It is a flowchart of a method for implementing a call service in this embodiment, and the method can be applied to a device for implementing a call service, and the device can run on an eMSC. The method may include the following steps.
[0076] S510, judging whether the first state of the terminal in the enhanced mobile switching center is consistent w...
Embodiment 2
[0086] Image 6 It is a flowchart of a method for implementing a call service in this embodiment, and the method can be applied to a device for implementing a call service, and the device can run on an eMSC. The second embodiment is roughly the same as the first embodiment, the main difference is that: when it is determined that the first state of the terminal is inconsistent with the second state, a registration request needs to be sent to the query call session control function entity in the IMS, so that the query call session The control function entity can reselect an S-CSCF entity for the terminal, that is, a second S-CSCF entity, which has completed related services of the terminal in the IMS domain.
[0087] The implementation method of the call service in this embodiment may include the following steps.
[0088] S610. Receive an initial call request sent by the terminal, and obtain a first state of the terminal in the enhanced mobile switching center.
[0089] Wherei...
Embodiment 3
[0110] Figure 7 It is a flow chart of the working method of the eMSC in this embodiment when performing the initial call service of the terminal, so as to realize the subscription notification mechanism independent of the registration state, and solve the first state of the ICS user on the eMSC and the second state of the ICS user on the IMS domain. The problem of inconsistency of status ensures that the initial call service process of the terminal can be carried out normally. The method may specifically include the following steps.
[0111] S701, the user terminal 7001 sends a local update request to the enhanced mobile switching terminal eMSC7002.
[0112] S702, the eMSC7002 performs signaling interaction with devices in the IMS (for example, the home server 7004 in the IMS) to update local information (for example, make the home server 7004 update the address of the eMSC7002 stored thereon, etc.).
[0113] S703, the eMSC7002 feeds back a local update success response to ...
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