Headset

Abstract

A communication unit, e.g. a headset, constructed as a slave station which may be coupled to a plurality of master stations, e.g. a mobile telephone, via a short-ranged communications connection, such as of the Bluetooth type or the DECT type, and has a plurality of address fields in which one or more identification keys may be stored. At least one of the address fields has an associated electrical lock which may be unlocked only by an adapter master station having a unique indentification key. It is also possible to “lift” the receiver of the public switched telephone electrically or mechanically via the headset, so that a call and conversations from the public switched telephone may be made and take place via the headset. In an embodiment, the coupling box has a recess in which the headset may be placed and be charged via a charging unit in the coupling boy. The invention ensures that the public switched telephone is used as much as possible, which, in addition to a better sound reproduction, is favourable in terms of costs.

1 . A communications unit ( 1 ) constructed as a slave station which is adapted to be coupled to a plurality of master stations ( 2 ) via a wireless connection, said communications unit having a memory with a plurality of address fields in which one or more identification keys may be stored, wherein a coupling is established between one of the master stations and the communications unit in that an identification key of the master station is stored in one of the address fields of the communications unit, wherein at least one of the address fields of the communications unit is configured with a fixed address field and an associated electrical lock, and that the address field may be overwritten only if a certain master station of the plurality of master stations has a unique identification key to open the electrical lock.  
   
   
       2 . A communications unit according to  claim 1 , wherein the fixed address field is predefined to be coupled only to specific master stations.  
   
   
       3 . A communications unit according to  claim 1 , wherein the coupling is established with a short-ranged communications connection of the Bluetooth type or the DECT type.  
   
   
       4 . A communications connection according to  claim 1 , wherein the communications unit is a headset.  
   
   
       5 . A communications unit according to claims  1 , wherein the master station is an adapter master station having a unique identification key, and that the adapter master station is coupled, optionally wirelessly, to a public switched telephone.  
   
   
       6 . A communications unit according to  claim 5 , wherein the adapter master station emits indication signals to the communications unit, allowing it to be verified in the communications unit, e.g. via sound emission, whether it may be coupled to the adapter master station, and if so a prioritized connection to the adapter master station is provided.  
   
   
       7 . A communications connection according to  claim 1 , wherein the master station is a public switched telephone, a mobile telephone or the like.  
   
   
       8 . A communications unit according to  claim 5 , wherein the adapter master station has a volume control unit to adjust the strength of a signal between the communications unit and a master station, e.g. a public switched telephone, relative to the strength of the signal between the headset and another master station, e.g. a mobile telephone.  
   
   
       9 . A communications unit according to  claim 5 , wherein the adapter master station has an electrical circuit or a mechanical structure adapted to lift or hang-up the receiver of the public switched telephone.  
   
   
       10 . A communications unit according to claims  5 , wherein the adapter master station emits a special sound at a call.  
   
   
       11 . A communications unit according to  claim 5 , wherein the adapter master station has a charging unit to charge the headset.