How does the cgPhone APP activation work? 

I have received a cgPhone activation code. Is each code assigned to a specific IMEI number, or how does it work?


The cgPhone activation code is a one-time code, i.e. it can only be used once.

When the activation code and server address are entered, the client (=App) is registered on the server (provisioning) and the extension (=cgPhone phone number) is activated. For this purpose, certificates and keys are exchanged once between the app and the cgPhone server in order to ensure secure communication (voice & messages) with other clients for future end-to-end encrypted communication. 

Please note that the registration is always specific to the device, i.e. a new registration is always required to increase security when the device is changed.

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