Sonet pointer interpretation system and method

Details Sonet pointer interpretation system and method Sonet pointer interpretation system and method

1991-10-02

1993-05-11

Canney, Vincent P.

Excavating

371 571, H04L 108

Patent

active

052107620

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.

REFERENCES:
patent: 4964095 (1990-10-01), Tyrrell et al.
patent: 4967405 (1990-10-01), Upp et al.

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