Method and device for returning to a normal communication link a

Details Method and device for returning to a normal communication link a Method and device for returning to a normal communication link a

1994-03-01

1994-11-22

Kuntz, Curtis

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

379 2, 379 26, 379221, H04M 124, H04M 1100, H04M 700

Patent

active

053675622

ABSTRACT:
A data communication system comprises two links between two terminal equipments, a standby link being used in the event of malfunctioning of a normal link. A method of returning to the normal link after using the standby link comprises, in parallel with transmission on the standby link, preliminary verification of the continuity of the normal link. The preliminary verification involves simultaneous transmission of a data signal by the terminal equipment initiating the continuity verification procedure, on the normal link and on the standby link, and detection by the other terminal equipment of the presence or absence of power on the normal link. This is done for each transmission medium of the normal link if the latter comprises separate media for each transmission direction.

REFERENCES:
patent: 4365248 (1982-12-01), Bargeton et al.
patent: 4442518 (1984-04-01), Morimoto
patent: 4656645 (1987-04-01), Kaneko
patent: 4680776 (1987-07-01), Ikeuchi et al.
patent: 4862492 (1989-08-01), Zwick
patent: 4887290 (1989-12-01), Dop et al.
patent: 4910763 (1990-03-01), Caron et al.
patent: 4969178 (1990-11-01), Chen et al.
patent: 5010550 (1991-04-01), Hirata
patent: 5120021 (1992-06-01), Lebowitz
IBM Technical Disclosure Bulletin, vol. 28, No. 8, Jan. 1986, pp. 3250-3250, New York, USA; "Adapter for connecting a multipoint modem network to the public switched network".
Patent Abstracts of Japan, vol. 9, No. 277 (E-355)[2000], Nov. 6, 1985; JP-A-60 119 147 (Fujitsu) Jun. 26, 1985.
Patent Abstracts of Japan, vol. 7, No. 170 (E-189)[1315], Jul. 27, 1983; & JP-A-58 77 336 (Tokyo Shibaura Denki), May 10, 1985.

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