Home > Term: fill-in signal unit (FISU)
fill-in signal unit (FISU)
A signal unit that is transmitted when there are no message signal units or link status signal units to be transmitted. It contains only error control and delimitation information.
- Part of Speech: noun
- Industry/Domain: Telecommunications
- Category: General telecom
- Company: ATIS
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Creator
- KeithC3
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