Gigabit ethernet interface to synchronous network (Sonet) ring
Abstract
A method and apparatus for routing data packets via a synchronous optical (SONET) network (102,104,106,108) from devices (118,118B) connected to a local area network (116,117,120,126) to devices (118,118B) connected to other local area networks (116,117,120,126). At each transport node (102,104,106,108) in the SONET network the data packets are unloaded from SONET payloads and requeued for transmission on an output path. This allows for easy resolution of contention between devices transmitting at the same time and avoids pre-assigning SONET channels. Source and destination address Information from the data packets can be used to route the data packets through the SONET network. A time-to-live indicator can be used to find the shortest path to a destination address in a SONET ring network or any bi-directional ring network.

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Projected expiry passed 22 December 2018, 7.8 years ago.
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1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| WO9520282A1 | Cites | World Intellectual Property Organization (WIPO) | X | Search report | 1,5,6,9 |
13 members in 4 offices
Priority claims5
| Document | Office | Kind | Date |
|---|---|---|---|
| 996172 | United States of America | – | |
| 99617297 | United States of America | A | |
| 99617297 | United States of America | A | |
| 996172 | – | – | – |
| US19970996172 | – | – | – |
Members13
| Document | Office | Kind | |
|---|---|---|---|
| CA2256014A1 | Canada | A1 | |
| EP0924901A2 | European Patent Office (EPO) | A2 | |
| US6222848B1 | United States of America | B1 | |
| EP0924901A3This record | European Patent Office (EPO) | A3 | |
| EP1441481A2 | European Patent Office (EPO) | A2 | |
| EP0924901B1 | European Patent Office (EPO) | B1 | |
| DE69827349D1 | Germany | D1 | |
| DE69827349T2 | Germany | T2 | |
| EP1441481A3 | European Patent Office (EPO) | A3 | |
| CA2256014C | Canada | C | |
| EP2259499A1 | European Patent Office (EPO) | A1 | |
| EP1441481B1 | European Patent Office (EPO) | B1 | |
| EP2259499B1 | European Patent Office (EPO) | B1 |
59 legal events, as 8 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
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|---|---|---|---|
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
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| Translation of granted ep patentGrantedTRGR | TRGR | SE | |
| European patents granted designating irelandGrantedFG4D | FG4D | IE | |
| Corresponds to:REF | REF | EP | |
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| European patent takes effect as a national patent in ch/liEP | EP | CH | |
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Numbers
- Publication
- 0924901
- Publication, DOCDB
- 0924901
- Publication, EPODOC
- EP0924901
- Application
- 98310614
- Application, DOCDB
- 98310614
- Application, EPODOC
- EP19980310614
Titles3
- German
- Gigabit-Ethernet Schnittstelle für ein synchrones Netz (SONET)
- English
- Gigabit ethernet interface to synchronous network (Sonet) ring
- French
- Interface gigabit ethernet pour un réseau synchrone (SONET)
Classification
- CPC, 14
- H04L12/4625
- H04J3/085
- H04J3/1617
- H04J2203/0042
- H04J2203/0082
- H04J2203/0085
- H04J2203/0098
- H04L12/4604
- H04L45/20
- H04L2012/5627
- H04L2012/5665
- H04Q11/0478
- H04L45/243
- H04L45/00
- IPC, 6
- H04J3 08
- H04J3 16
- H04L12 413
- H04L12 46
- H04L12 56
- H04Q11 04
Designated states2
- Contracting states, 1
- Sweden
- Extension states, 1
- Slovenia