In-service upgrade for a telecommunication system
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United States of America Patent
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Oct 17, 1995
Grant Date -
N/A
app pub date -
May 10, 1993
filing date -
May 10, 1993
priority date (Note) -
Expired
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Abstract
An upgrade arrangement wherein the switching functions of an in-service switch or cross-connect system are transferred or 're-homed' onto a new, larger capacity switch via the existing input and output ports of the original system. The re-homing can be performed without loss of service, even if the original system is operating at full-capacity. By exploiting the protection redundancy engineered into existing telecommunication switching systems, all of the signals being routed through the original switch are temporarily consolidated onto only one-half of the switching fabric normally required to accommodate such connectivity. This signal consolidation allows half of the original switch ports to be brought off-line (without a service disruption), and linked to the new, higher capacity switching fabric. The signals that had been consolidated within the original switching fabric are then re-routed onto the new switching fabric (via the linked ports), and the other half of the original switch ports are brought off-line and linked to the new switching fabric. The re-routed signals (still being switched in a consolidated format within the new switching fabric) are then redistributed (unconsolidated) among the linked ports and the new switching fabric so that a normal switching pattern is reestablished. Re-homing the signals onto a single new switching fabric allows all connections to be managed from a single control point. In addition, the re-homing to the new switching fabric is operationally transparent (timing and protocols within the switching system are unaffected, and full non-blocking access is maintained), and all existing cabling to and from the original input and output ports remains intact and functioning. In a preferred embodiment of the invention, the input and output ports of the original switching fabric are linked to the new switching fabric via electro/optic interfaces, which replace the standard input and output circuits of the original system.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- AT&T IPM CORP.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Baranyai, Lawrence | Howell, NJ | 6 | 55 |
Butler, Francis H | Howell, NJ | 1 | 13 |
Cox, John C | Oakhurst, NJ | 8 | 56 |
Lin, Chi H | Holmdel, NJ | 1 | 13 |
Srinivasan, Nattu V | Eatontown, NJ | 2 | 52 |
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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