The ONS 15454 Alarm Interface Controller
–International (AIC-I) card provides customer-defined (environmental) alarms and controls, and supports local and express orderwire. The AIC-I provides ten customer-defined input and four customer-defined input or output contacts. The physical connections are via the backplane wire-wrap pins.
In an ONS 15454 M6 chassis, the Transport Shelf Controller (TSC) card combines the functions of
multiple cards, such as TCC2P, ISC, and AIC-I cards; and the Transport Node Controller (TNC) card combines the functions of multiple cards such as TCC2P, OSCM, ISC, and AIC-I cards. Therefore the TSC and TNC cards enable the availability of more slots for line cards. The TNC/TSC cards are similar to TCC2 and TCC2P cards.