METHOD AND APPARATUS OF MAINTAINING A PBX SYSTEM
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United States of America Patent
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Issued Date -
Jan 5, 2006
app pub date -
Jul 1, 2004
filing date -
Jul 1, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method and an apparatus of maintaining a private branch exchange (PBX) system. The PBX system has a first top-level host used for serving a plurality of IP-based PBX extensions. The method includes utilizing a first medium-level host for checking if the first top-level host is capable of serving the IP-based PBX extensions, and utilizing the first medium-level host for functioning as a second top-level host to substitute for the first top-level host if the first top-level host is unable to serve the IP-based PBX extensions.
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