Auto ATM-VC detection for ATM network access devices

Details Auto ATM-VC detection for ATM network access devices Auto ATM-VC detection for ATM network access devices

2007-12-18

2007-12-18

Nguyen, Chau (Department: 2616)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S399000, C370S395300

Reexamination Certificate

active

10400412

ABSTRACT:
The system and method allow Customer Premises Equipment Network Access Devices using ATM as a datalink layer transport, to automatically determine what VC addresses are supported by the remote Network Access Concentrator end of the physical connection. A “divide and conquer” approach is used to ping as quickly as possible the most likely VPI/VCI values. The VC discovery mechanism attempts to discover active VP's and pings only VC's on these VP's. If there are no VP replies, it pings VC's to a limited VCI depth covering the entire VP range. The maximum predetermined range of VC's to ping (MAX-PING) and the physical upstream line speed determines the overall amount of time required by this procedure. Direct benefits of the proposed approach include: time and money saved by not having to customize the firmware in each NAD destined for particular Network Service Providers, and improved end-user experience by providing plug-and-play convenience out of the box.

REFERENCES:
patent: 5659540 (1997-08-01), Chen et al.
patent: 5737312 (1998-04-01), Sasagawa
patent: 6868066 (2005-03-01), Fujita
patent: 6993048 (2006-01-01), Ah Sue
patent: 1 009 133 (2000-06-01), None

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