Even More Protection287.10 CSTA application OperationH*17* Z (code) #The communications system can be extended via third-party programmes. If theprogramme offers information entry (e. g. setting room temperature) you can usespecial code-number procedures to conduct these settings. Your system adminis-trator will inform you regarding code numbers.8. Even More Protection8.1 Telephone LockActivating:H*33* Z (user PIN) #Deactivating:H#33* Z (user PIN) #You can lock your telephone as a safeguard against unauthorised use. Then onlythose features and functions of your telephone can be accessed that are preset inthe OpenCom 100 Configurator for the “Guests” user group. You must enter youruser PIN to activate the telephone lock (see Changing the User PIN on page 29).Note: National emergency numbers can still be dialled al-though the telephone lock is activated, providing they havebeen defined in your user group’s special list in theOpenCom 100. Ask your system administrator for these num-bers.You cannot activate/deactivate the telephone lock on a SIP terminal using thecode-number procedure described here. You can, however, operate the featurewith the OpenCTI 50 additional programme. To do so, the system administratorhas to authorise you to use this programme. For more information, please refer tothe online help of the OpenCom 100.