Sonet pointer interpretation system and method
US5210762A · kind A · utility
13Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1991 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Oct 2, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2203/006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A SONET pointer interpretation in system which an Alarm Indication Signal (AIS) of a first type is interpreted as a subset of Loss of Pointer (LOP) of a first type. Specific events are defined for entering an AIS type 1 state and for exiting this state. Specific events are also defined for entering an LOP type 1 state and for exiting this state. Finally, a truth table is defined for mapping these states into a valid pointer (NORM) state, an AIS of a second type state and an LOP of a second type state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.