Gigaset N670 IP PRO Installation, Configuration And Operation page 84

System settings
Enhanced Security - Early Encryption and Re-Keying
Activate/deactivate the option.
Activated: The following messages are encrypted:
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The key used for encryption is changed during an ongoing call and thus
improving the security of the call.
Deactivated: No CC messages or early data are encrypted.
Enhanced Security - Automatic release for non-encrypted calls
Activate/deactivate the option.
Activated: If encryption is activated, it will be released in the case that a call is initiated
by a device that is not supporting encryption.
Deactivated: Encryption is never released.
DECT radio settings
Due to different national regulations DECT units are required to use different frequency ranges
to make them compatible with DECT systems in other areas. You can adapt the frequency range
of the N670 IP PRO to the requirements of your region.
DECT Radio band
Select the radio frequency band used in your region.
Please select the DECT frequency band your system should operate according to
your region.This is a system wide setting. Changing the setting will reboot the DECT
radio part. Wrong setting may cause violation of legal regulations. In case of doubt,
contact your Telecommunications Authority.
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CC (Call Control) messages in a call
Data that may be sensitive at early stages of the signalling, e.g., dialling
or CLIP information sending