Priority user protection in multiple priority switching systems

Priority-based arbitrator on a token-based communication medium

Private automatic branch exchange for integrated services digita

Private automatic branch exchange system with line accessing num

Private automatic branch exchange telephone system with two data

Private branch exchange

Private branch exchange and line card to be used in such a priva

Private branch exchange having transmission channels commonly av

Private branch exchange system and methods for operating same

Private exchange for ISDN

Private network with means for establishing virtual tie trunks b

Private telephone installation architecture

Procedure and apparatus for transmitting binary messages in a se

Procedure and arrangement for a radio communications system

Procedure and device for routing telecommunications in a meshed

Procedure for forming frequencies of a digital radio telephone

Procedure for switching-over systems

Procedure for the handover of a radio connection

Process and a circuit arrangement for signal transmission using

Process and a monolithically integrated device for speed adaptat