Method for transmitting a digital broadband signal in a tributary unit concatenation via a network of a synchronous digital multiplex hierarchy
US5168494A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 25, 1991 |
| Grant date | Dec 1, 1992 |
| Priority date | — |
| Expiry date | Apr 25, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/1611
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Method for transmitting a digital broadband signal in a tributary unit concatenation via a network of a synchronous digital multiplex hierarchy. A pointer for positional identification in a frame is allocated to the first tributary unit in a tributary unit concatenation; instead of a pointer, the further tributary units receive a concatenation indicator. Every cross-connect equipment along a transmission link recognizes the tributary unit concatenation and forwards the tributary units thereof in the correct sequence. When a clock matching is required in the case of a first tributary unit, a pointer skip is initiated at all further tributary units. This requires hardware and software. This is eliminated when all tributary units (TU-12.sub.1 through TU-12.sub.5) containing the broadband signal (DSa) have a pointer (PTR1 through PTR5) having the value of the positional identification of the first tributary unit (TU-12.sub.1) allocated to them. The individual tributary units (TU-12.sub.1 through TU-12.sub.5) can then pass the cross-connect equipment, if necessary with an individual pointer skip (PS), independently of one another. A restoration of the tributary unit concatenation occurs…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.