Communications system comprising a ring-shaped network which is provided so as to provide a communications network in the subscriber line region of a digital switching equipment

US4908824A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Gerhard Leibe · Munich, DE
• Klaus Kuhlmann · Riegelsberg, DE
• Albert Weiss · Munich, DE

Key dates

• Filing date: Aug 11, 1988
• Grant date: Mar 13, 1990
• Expiry date: Aug 11, 2008

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04Q11/0407
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A ring-shaped network (RN) which is an offering network is inserted into a subscriber line region of a switching equipment (VE). A gate (GWE) is arranged in one (AEI) of the acceptance devices of the respectively accepting n subscriber line equipment (SLM) and signalling and message transmission procedure matching is done in the gateway means. The coupling to the ring-shaped network (RN) occurs through a ring-coupling (RCB) to which a gateway apparatus (GWE) and an external acceptance device (AEE) which contains a matching device (APE) and a plurality of subscriber line equipment (SLM) are connected. The matching device (APE) provides the signalling and information transmission procedure matching. For example, ISDN subscriber equipment (SE) are connected to the subscriber line equipment (SLM) via central office lines (ASL). The communications system is operated, administered and monitored either centrally by the switching equipment (VE) via an operating terminal arranged in the switching equipment (VE) or divided into two network regions, either subscriber line region/switching center or switching eqipment network/ring-shaped network by the switching equipment (VE) and/or by the ga…