| 6711174 |
Process, control system, terminal, exchange, incoupling device, decoupling device, and combination device for providing functions to a telecommunications terminal |
— |
2004-03-23 |
| 6611821 |
Method of charging for the use of an internet service plus a service control unit and a service provider unit |
Uwe Stahl, Wolfgang Lautenschlager, Harald Orlamunder |
2003-08-26 |
| 6255966 |
Method of remotely programming a cellphone via a network |
Heike Felbecker-Janho |
2001-07-03 |
| 6181789 |
Telecommunication system and processor means, and method |
Heike Felbecker-Janho |
2001-01-30 |
| 5946628 |
Method and circuit arrangement for the access of cordless terminals to a telecommunications system |
Artur Veloso, Joachim Endler, Klaus Geywitz, Hans-Joachim Adolphi |
1999-08-31 |
| 5754539 |
Local area network for use in office communications and a circuit arrangement therefor |
Manfred Metz |
1998-05-19 |
| 5544226 |
Private branch exchange having a central control unit and a mobile control unit subordinate thereto |
Bernd Weis, Karl-Albert Turban, Monika Bezler, Manfred Schulz |
1996-08-06 |
| 5357504 |
Facility and method for D channel packet switching |
— |
1994-10-18 |
| 5355402 |
System for establishing a connection between private branch exchanges |
Bernd Weis, Karl-Albert Turban, Monika Bezler, Manfred Schulz |
1994-10-11 |