Originally called number, in telephony, the phone number of the originally called party, regardless of call redirection; look inside a Signalling System No. 7 (SS7) ISDN User Part (IUP) initial address message (IAM) for this optional parameter
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).
Order confirmation number, a method for recording purchase orders in many Enterprise resource planning (ERP) systems
This disambiguation page lists articles associated with the title OCN. If an internal link led you here, you may wish to change the link to point directly to the intended article.