Method of realizing changing open talk to secret talk

Abstract

This invention discloses a method for turning talks from open to secrete including: a first terminal sends a request of turning open to secrete talk service and informs a second terminal to start the secrete talk service negotiation with the network side, at the same time, the first terminal starts the negotiation between itself and the network side to set up a secrete talk transmission channel, then, the two terminals carry out the secrete talk process. First of all, terminals negotiate on the transfer of secrete talks then a secrete transmission channel is set up to secure the transfer process smoothly. Besides, this invention also provides a method for realizing the process control of turning open talk to secrete by signaling in the band.

Description

technical field [0001] The present invention relates, in particular, to a method for converting plaintext to encrypted speech. Background technique [0002] Each industry has unique requirements for communication according to its own characteristics. In the past, the general practice was to build a dedicated network for communication according to its special needs, but this method is no longer used, mainly for the following reasons: on the one hand, the general communication network can meet the basic needs of each dedicated network; On the one hand, the construction and maintenance costs of private networks are very high, and the construction period is also very long; on the other hand, since private networks are not universal, the development of private network technology is relatively slow. Due to the above reasons, the current private network construction is usually implemented by superimposing the network, that is, superimposing special equipment that can meet the spec...

AI Technical Summary

Problems solved by technology

[0012] It can be seen from the above description that during the entire implementation process of switching from plain language to encrypted voice, the dedicated terminals on both sides cannot control each other. The dedicated terminal simultaneously enters the encrypted communication process

In the process of changing from plain language to encrypted voice, various unpredictable problems will occur. For example, the dedicated terminal on one side has switched to encrypted voice communication, while the dedicated terminal on the other side has not yet switched to encrypted voice communication. , the information exchanged between the two parties cannot be correctly understood between the dedicated terminals, resulting in the failure of normal communication; another example, the switching process from plain voice to encrypted voice takes a long time, making it impossible for the terminals to communicate normally

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