Subscriber's line switching control system Patent #: 4761779
ApplicationNo. 222595 filed on 07/21/1988
US Classes:370/421, Subscribers connected to input or output circuit by a common bus370/434, Concentrator370/467, Conversion between signaling protocols370/524, Using a dedicated signaling channel (i.e., D-channel)370/535Multiplexing combined with demultiplexing
ExaminersPrimary: Olms, Douglas W.
Assistant: Marcelo, Melvin
Attorney, Agent or Firm
International ClassH04J 003/12
Foreign Application Priority Data1987-07-22 JP
AbstractAn ISDN remote switching unit for accommodating analogue telephone subscriber lines and ISDN digital subscriber lines comprises at least one signal converter for each of the conventional analogue subscriber so that a line signal, an address signal and tone signal of each conventional analogue subscriber are converted into a signaling system of the ISDN digital subscribers line, and a traffic concentrator connected to the signal converter and disposed remote from a host exchange station, whereby the signaling system between the remote station and the host station is unified for both the analogue telephone subscriber and the ISDN digital subscriber.