Ronald J Kandell

US Patent:

45233080, Jun 11, 1985

Filed:

Sep 29, 1982

Appl. No.:

6/427513

Inventors:

John Bull - Lithia FL
Leon Croft - Longwood FL
David B. DeVaney - Longwood FL
Russell R. Davis - Geneva FL
David L. Hinshaw - Longwood FL
Haresh C. Jotwani - Longwood FL
Ronald J. Kandell - Winter Springs FL
Richard F. Kurtz - Longwood FL
Ernest O. Lee - Longwood FL
Gunter F. Neumeier - Longwood FL
Glenn L. Richards - Longwood FL
Richard Scott - Longwood FL

Assignee:

Stromberg-Carlson Corporation - Lake Mary FL

International Classification:

H04Q 1104

US Classification:

370 56

Abstract:

A line switch including a concentrator arrangement for coupling telephone calls between a plurality of subscriber lines and a plurality of port group highways to a central office switching network in a telephony system. The analog voice signals are first digitized and multiplexed into time slot channels on line group highways for transfer to the concentrator arrangement. The concentrator arrangement couples the digitized voice information signals between time slot channels on any of the line group highways and any of the port group highways. The line switch includes control circuitry that selects the time slot channel, line group highway and port group highway to couple the digitized voice information signals between the subscriber line and the central office matrix switch through the concentrator.

US Patent:

44305303, Feb 7, 1984

Filed:

Nov 29, 1982

Appl. No.:

6/445256

Inventors:

Ronald J. Kandell - Maitland FL
Donald R. Merriam - Hilton NY
Bernard H. Root - Longwood FL
William W. Woodruff - Maitland FL

Assignee:

Stromberg-Carlson Corporation - Orlando FL

International Classification:

H04M 328

US Classification:

1791752D

Abstract:

A telephony network with a digital central office and one or more remotely located digital satellite units. Each digital satellite unit connects to a number of remote subscriber lines and monitors these lines to establish communications through interconnecting spans and a digital satellite interface at the digital central office. The digital satellite interface also connects to port group highways in the digital central switch, to call processors in the digital central switch, and to a maintenance processor in the digital central switch. An automatic test circuit communicates with the interface, and each remote digital satellite unit contains complementary testing circuitry. A test call is made to test the system by activating a test access relay at the remote digital satellite unit and producing a call to the automatic test circuit. The automatic test circuit then generates a tone that is carried as voice data to the remote digital satellite unit test circuit. If this tone is received, the test circuit at the digital satellite unit sends a tone followed by dial pulses.