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The phrase "on the fritz" is a common American expression meaning that something is out of order. "The Air -
Its first usage is believed to have been in 1902, however at that time the saying was used more to explain that something (other than machinery) was in a bad way. E.g. The economy is "on the fritz".
The acronym C.M.M.S. is a generic term with stands for Computerised Maintenance Management Software (or System).
See World Wide Words by Michael Quinion.
http://www.worldwidewords.org/qa/qa-