AT&T DEFINITY 7100 series Manual de usuario descargar pdf (Pagina 28)

CONTROL CIRCUIT PACKS (Contd)

DEFINITY COMMUNICATIONS SYSTEM, G1

Duplication Interface TN772

●

Controls and provides the memory shadowing function with the

Duplication Option

Expansion Interface TN776

●

Extends the TDM bus from the PPN cabinet to the EPN cabinet

●

Communicates with the TN776 Expansion Interface Circuit Pack in the

EPN cabinet

Lightwave Transceivers (4-Type)

●

Mount on an I/O connector located on the backplanes of multi-carrier

cabinet (MCC) and single-carrier cabinet (SCC) systems requiring an

Expansion Port Network

●

Terminates the fiber optic link(s) between the PPN cabinet and the

EPN cabinet

Current Limiter Card 982LS

●

Connects to back of processor circuit pack slot

●

Provides current limited accessory 48 volts, emergency transfer logic,

current limited 5 volts to trip main circuit breaker in high temperature

condition and duplicated 48 volts for fan units in the PPN cabinet.

Expansion Interface TN776

●

Extends the TDM bus from the PPN cabinet to the EPN cabinet

●

Communicates with the TN776 Expansion Interface Circuit Pack in the

PPN cabinet and the TN775 Maintenance Circuit Pack in the

Expansion Control carrier

Lightware Transceivers (4-Type)

●

Mount on an I/O connector located on the backplanes of multi-carrier

cabinet (MCC) and single-carrier cabinet (SCC) systems requiring an

Expansion Port Network

●

Terminates the fiber optic link(s) between the PPN cabinet and the

EPN cabinet

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AT&T DEFINITY 7100 series Manual de usuario Pagina 28

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