109Interface LEDsFigure 122 FIC-1AE3 panelTable 151 LED descriptionLED DescriptionLINK/ACT• On: Carrier signal has been received.• Flashing: Data is being received or/and transmitted.• Off: No carrier signal has been received.LP/AL• On: The interface is in a loopback.• Off: No loopback or alarm is present.• Flashing: An alarm indication signal (AIS), loss of frame alignment (LFA)signal, or remote alarm indication (RAI) signal is present.Interface cables and the connection methodsFor more information about E3 interface cables and the connection methods, see "E3/T3 interface."FIC-1AT3IntroductionThe 1-port 44 Mbps ATM-T3 interface module (FIC-1AT3) provides these functions:• Two ATM cell mapping modes: ADM and PLCP• Scrambling in data transmission• Line clock (when working as DTE interface) and internal clock (when working as DCE interface)• Four types of test measures: local cell loopback, local loopback, remote payload loopback, andremote line loopbackInterface specificationsTable 152 Interface specificationsItem DescriptionConnector SMBNumber of connectors 2Interface standard G.703, G.704, G.823Interface rate 44.736 Mbps
