Software patching in the SPC environment and its impact on switching system reliability

The author highlights various concepts related to software patching in the stored program control (SPC) environment. He introduces the concept of software maintenance and studies the effect of the software patching process on switching system reliability. The importance of managing the software chan...

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Bibliographic Details
Published in:IEEE journal on selected areas in communications 1991-05, Vol.9 (4), p.626-631
Main Author: Ali, S.R.
Format: Article
Language:English
Subjects:
Application software
Applied sciences
Communication system software
Control systems
Exact sciences and technology
Helium
Humans
Software maintenance
Software systems
Switches
Switching and signalling
Switching systems
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Telephony
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Summary:The author highlights various concepts related to software patching in the stored program control (SPC) environment. He introduces the concept of software maintenance and studies the effect of the software patching process on switching system reliability. The importance of managing the software change process, including patch testing and patch tracking, is discussed. The types of patches that are typically applied in the SPC switching environment are described. It is pointed out that the prime objective of real-time software suppliers, especially those supporting SPC switching systems, should be to minimize online patching. It is concluded that proper design specification of SPC switching functions and patches, coupled with exhaustive testing of software/hardware interfaces, could help reduce the number of patches in the field.< >
ISSN:0733-8716
1558-0008
DOI:10.1109/49.81958