System for expanding a parameter encoding field in a message to allow additional parameters to be added while maintaining compatibility with existing parameter encodings
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United States of America Patent
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Mar 4, 2003
Grant Date -
N/A
app pub date -
Jul 14, 1998
filing date -
Jul 14, 1998
priority date (Note) -
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Abstract
A system for expanding a parameter encoding field in a new communications protocol that is compatible with an old protocol. An unused command parameter in an old protocol is used to indicate an expanded parameter encoding field in a new protocol. Parameter encodings from the old protocol are unchanged in the new protocol. A system communicating using the old protocol recognizes all parameters from the old protocol and ignores parameters from the new protocol. A system communicating using the new protocol recognizes parameters from both the old and new protocols.
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