The doctrine is not a defined law that can be invoked, but a set of principles which is incorporated in some form in the law of many states. The legal concept of the inviolability of the home has been known in Western Civilization since the age of the Roman Republic.
1 Operating Company Number, in telephony, a code used in various iconectiv telephony products, a major subset of which equate to Company Codes assigned by the National Exchange Carrier Association (NECA) to telecommunications carriers (including landline, wireless carriers, and resellers of various types).
Officer Candidate School (OCS) Officer Candidate School (OCS) is an extensive 17-week course of instruction which prepares officer candidates to serve effectively as officers of the United States Coast Guard.