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What does SO stand for?

SO stands for Switching Office

This definition appears very frequently and is found in the following Acronym Finder categories:

  • Information technology (IT) and computers

See other definitions of SO

Other Resources:
We have 33 other meanings of SO in our Acronym Attic

Samples in periodicals archive:

If it's going to a wired phone, the switching office sends the call to the local phone network over phone lines.