(Universal Service Order Code) An equipment coding system created by AT&T. The number was applied to telephone equipment and to wire termination patterns. See 568A.
"USOC." YourDictionary, n.d. Web. 10 November 2018. <https://www.yourdictionary.com/usoc>.
USOC. (n.d.). Retrieved November 10th, 2018, from https://www.yourdictionary.com/usoc
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