First office application

In telecommunication, First Office Application (FOA) is a phase in development of new equipment or technology. The FOA phase is the first deployment (pilot) of the equipment or technology in an actual customer environment after internal test and acceptance phases are completed.[1]

References
  1. Bauer (1985). "The 5ESS Switching System: System Test, First‐Office Application, and Early Field Experience". AT&T Technical Journal. 64 (6): 1503–1522. doi:10.1002/j.1538-7305.1985.tb00284.x. S2CID 27703382.
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