Device for the transmission by an asynchronous network, notably an ATM type network, of signalling data, channel by channel, assembled in a multiframe transmitted synchronously in out-of-band mode
US5220563A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1991 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Dec 20, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/563
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a device for the transmission, by an asynchronous network, notably a network of the ATM type, of signalling data elements, channel by channel, assembled in a multiframe transmitted synchronously in out-of-band mode, the information elements are conveyed, in the asynchronous network, in packets of data bits, each, packet being formed by an information cell including, firstly, a header carrying an address and, secondly, a useful field carrying the information to be transmitted. On a transmission side, the device includes an apparatus for acquiring signalling data elements of each channel of the multiframe; a device to detect changes in the state of these data elements; and a device for the generation, on the network, at each change thus detected, of an information cell containing the new signalling data element and the address associated with the corresponding channel. On a reception side, the device includes an apparatus for acquiring, from the network, the information cells containing signalling data elements; a device to memorize these signalling data elements between each corresponding change in state; and a device to insert the data elements thus memorized into a multiframe a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.