Modularly structured digital communications system

• US 4,903,258 A
• Filed: 08/19/1988
• Issued: 02/20/1990
• Est. Priority Date: 08/21/1987
• Status: Expired due to Fees

• Current Assignee: Siemens AG
• Original Assignee: John Muyssen, Klaus Kuhlmann, Manfred Sonnemann
• Inventors: Kuhlmann, Klaus, Muyssen, John, Sonnemann, Manfred
• Primary Examiner(s): Griffin, Robert L.
• Assistant Examiner(s): Chin, Wellington
• Application Number:
  US07/233,801
• Time in Patent Office: 550 Days
• Field of Search: 370/58, 370/60, 370/66, 370/67, 370/85, 370/94
• US Class Current: 370/360
• CPC Class Codes: H04Q 11/0407 using a stored programme control
• CPC Class Codes: H04Q 11/0428 Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals

Claims