H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/1, 363/1.8
H04B 17/00 (2006.01) H04B 17/02 (2006.01) H04J 3/12 (2006.01) H04J 3/14 (2006.01) H04L 1/24 (2006.01) H04L 25/49 (2006.01) H04M 11/06 (2006.01)
Patent
CA 1186378
Abstract An orderwire communication scheme for a fiber optic communication network includes terminal station equipment associated with the central offices at opposite ends of the network and signal regenerator equipment at the repeater sites disposed between the terminal stations. The communication format along the link is a data-over-voice scheme, the data being digitally encoded on an FSK modulated carrier. In carrying out supervisory functions with respect to each of the stations along the link, command messages are conveyed from the terminal stations at one of the central offices to respective stations along the link in the form of command instructions. Each command message from a central office's terminal station contains the address of the recipient station for whom the message is intended followed by a specific encoded instruction. The instruction may contain a request for information from the addressed site as to equipment conditions at the site and/or a directive that the equipment at the site perform a particular task. In reply to the command message sent to it, the addressed site transmits a response message back to the source station, representative of the status of a particular equipment condition or operation as requested by the command instruction. In this manner, supervisory personnel at each central office may remotely monitor and control the operation of the communicative equipment at the various sites along the link and thereby take correction maintenance or protection channel substitution action where and when required. The digital message transmission scheme also provides facility for fault/alarm reporting, testing the bit error rate of individual -61- channels of the repeater and the transceiver equipment at each terminal station when requested, and is used for paging signalling between central offices. -62-
376985
Waschka George A. Jr.
Harris Corporation
Shapiro Cohen
LandOfFree
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