Справочник Пользователя для Sophos Cordless Telephone D330
How to use Group Features
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Monitoring the status of group facility keys
It may be that your system does not support this feature for you. If that is
the case, you will not have access to it. You can identify the status of a
group facility key by how the LED in the key is displayed
the case, you will not have access to it. You can identify the status of a
group facility key by how the LED in the key is displayed