The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 2004
Filed:
Jun. 06, 2000
William L. Long, Garland, TX (US);
Richard G. Van Tyne, Jr., Pilot Point, TX (US);
William L. Brazell, Garland, TX (US);
Jose Salmones, Plano, TX (US);
Donald Loewen, Dallas, TX (US);
Johnny Wheat, Allen, TX (US);
Val Teodorescu, Plano, TX (US);
Alcatel, Paris, FR;
Abstract
Matrix recovery and link maintenance for a signaling node in an SS7 network. The signaling node comprises a planar redundant switching matrix with master and standby sides. End devices for trunk interfacing and channel data control receive data and timing from the master side, de-coupled from data and timing paths of the standby side. In steady-state, revenue traffic between the SS7 network and the signaling node runs on the master side in a pulse code modulated (PCM) form. Test channels are set up on both sides. Test patterns are propagated on the test channels for monitoring failures of timing path, PCM data, and device communication. When a failure condition is detected on the master side, the signaling node transmits idle signaling to the network, so that the revenue traffic is suspended and the link is maintained in an in-service state.