•External dial tone (long dial tone):

−After dialling the exchange line access number, when a free external line is available – dialling a telephone number is possible

•Internal dial tone (private branch exchange dial tone):

−After picking up the receiver or after pressing the Flash or Query key, when a free line is available – dialling a telephone number is possible

•Confirmation tone:

−At the completion of programming, when the programming has been successfully executed

•Busy tone:

−After picking up the receiver, when no free line is available or an authorisation is missing

−After dialling a phone number, when the desired connection is busy or the network is overloaded or an authorisation is missing

−At end of call

−During programming, when the programming was unsuccessful or an authorisation is missing

−During a Call Through call, when the telephone number transferred from the mobile phone is not permitted to use Call Through

•Call tone:

−During the call phase

•Call waiting tone:

−During a call (when call waiting has been enabled ), when another call comes in – it is possible to accept or reject the additional call

•Changing tone:

−During a Call Through call, when the telephone number transferred from the mobile phone is permitted to use Call Through - dialling a telephone number is possible

−During a remote programming call, when the connection for remote programming is available – programming is possible