Synchronous digital hierarchy transmission device and method for

Details Synchronous digital hierarchy transmission device and method for Synchronous digital hierarchy transmission device and method for

1994-08-30

1996-10-29

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 68, 370 681, 370 55, 340827, H04L 122

Patent

active

055703445

ABSTRACT:
In an SDH transmitting/receiving device having unitized redundantly configured transmitting/receiving sections (STM4W, STM4P), a multiplexing protection processing section (MSP), a redundantly configured time-slot exchange section (TSA), a unit switching processing section (UNITSW), and a channel section (D1CH), in addition to registers being provided in the multiplexing protection processing section and in the unit switching processing section, a signal line is provided between the multiplexing protection processing section and the unit switching processing section, whereby when performing an upgrade to a multiple-shelf configuration high transfer speed SDH transmitting/receiving device, a unit switching request is made to the multiplexing protection processing section and unit switching information is set into a register, and by making a mandatory switching request in the process of exchanging units, the unit switching information is transferred via the signal line to the unit switching processing section and the units are switched.

REFERENCES:
patent: 5216666 (1993-06-01), Stalick
patent: 5265096 (1993-11-01), Parruck
patent: 5343464 (1994-07-01), Iino et al.
patent: 5390164 (1995-02-01), Kremer
patent: 5394389 (1995-02-01), Kremer
patent: 5406401 (1995-04-01), Kremer
patent: 5406549 (1995-04-01), Kremer
patent: 5459715 (1995-10-01), Furuta et al.

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