Physical layer and physical layer diagnostic system with...

Details Physical layer and physical layer diagnostic system with... Physical layer and physical layer diagnostic system with...

2007-09-18

2007-09-18

Pezzlo, John (Department: 2616)

Multiplex communications

Diagnostic testing

Path check

C370S282000, C709S250000, C710S038000

Reexamination Certificate

active

10096211

ABSTRACT:
A physical layer and a physical layer diagnostic system allow the physical layer of a network device to be tested without requiring the physical layer to be connected to a medium access controller. The physical layer includes a medium-side interface. A plurality of digital circuits in the physical layer communicate with the medium-side interface. A medium communicates with the medium-side interface. A packet generating device is connected to the medium and generates data packets that are transmitted over the medium to the medium-side interface, through the plurality of digital circuits of the physical layer and back to the packet generating device.

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IEEE Std 802.3-2002 (Revision of IEEE Std 802.3, 2000 Edition); IEEE Standard for Information Technology -Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements, Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications; IEEE Computer Society, Sponsored by the LAN/MAN Standards Committee; Mar. 8, 2002; 1538 pages.

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