Firm order commitment (FOC) date
Phone
The date the losing carrier confirms it will release a phone number during a port, when it starts working with the new provider.
A store gets a FOC date of Tuesday at 10 a.m. It keeps the old service live, has a teammate call the number at 10:30 to confirm it rings in the new system, and cancels the old plan that afternoon.
It's the one date to plan your switch around, so customers never hit a dead line.
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