Sennheiser WiCOS Instruction Manual page 71

Assign these conference units the desired custom key as described on
page 68.
To no longer use a custom key:
Initialize all required conference units with the access point (see
page 63).
In the "default key" box, select the
The setting is saved. The system encrypts all radio signals with the
default encryption key. The access point can now use all WiCOS
conference units again.
Automatic encryption and individual encryption both have an
identical encryption algorithm. The custom key allows you to adapt
the conference system to your requirements and protect it against
unauthorized access.
To delete a custom key:
In the "custom key" box, select the custom key to be deleted by clicking
the corresponding "Use custom key
Press the Delete key to delete the selected custom key.
Or:
Overwrite the selected custom key with a new custom key.
Using previously saved custom encryption keys
The conference units and the access point can manage up to 15 custom
encryption keys. This allows you to specify which conference units are
admitted to the conference.
In the "custom key" box, select one of custom keys by clicking the
corresponding "Use custom key
All conference units that have been assigned this custom key can be
linked to the access point and can be used for the conference
configuration.
Note down which custom key
conference configuration. Also note down the custom keys. The
software does not save the custom keys as text, i.e. they cannot be
restored.
Configuring the conference system
"Use default key" option button.
..." option button.
..." option button.
"Custom key ..." is used by which
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