Method and apparatus for in service software upgrade for expandable telecommunications system
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United States of America Patent
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May 28, 2002
Grant Date -
N/A
app pub date -
Jul 16, 1999
filing date -
Jul 16, 1999
priority date (Note) -
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Abstract
A method and apparatus is provided for upgrading software, or a portion thereof, on a continuously running system, while the system is operating. A base set of software is built which contains a reserved memory area in its memory architecture. Upgrade source files are built into the reserved memory area. The upgrade images are extracted out and converted into loadable upgrade images. A header indicates where the upgrade is to be downloaded in the system and also identifies the location in the reserved memory area at which the upgrade is to be stored in the relevant component of the system. The upgrade is downloaded into the respective reserved memory area in the memory storage devices in the respective components in the system. The downloads can be performed while the system is operating because the reserved memory area does not contain live code. The upgrades are activated or deactivated using a jump instruction sequence.
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