Firm Order Commitment. A term used by Hosted VoIP providers to describe the date when your previous carrier should complete porting your phone number(s), making it (or them) available to use under your new carrier. For other telecommunications services, FOC can also refer to the installation date for T1 or DSL lines.
« Back to Glossary IndexFirm Order Commitment FOC
by Ian McLeod | Aug 13, 2020