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Excerpt

Call status To establish a call Brand brand client completes three phases shown by three icons: Call status icons   Image Modified Red light Starting the connection Connection not yet established. This step may take several seconds Image Modified Yellow light Image Removed Key exchange Connection established but encryption keys are being exchanged. Green light Secure call established Connection established and secure. You can now speak securely

Call quality level

Some factors of the mobile network (i.e.: GPRS use, poor signal, frequent radio cell changes, roaming) could decrease the audio quality of the call, increasing voice delay. Three variants of the call status icon shows the current call quality level.

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