8Interface LEDsFigure 9 SIC-E1-F panelTable 11 LED descriptionLED DescriptionLINK/ACT• On: Carrier signal has been received.• Flashing: Data is being transmitted or received.• Off: No carrier signal has been received.LP/AL• On: The interface is in a loopback.• Off: Neither loopback nor 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 E1 interface cables and the connection methods, see "E1 interface."SIC-2E1-FIntroductionThe 2-port fractional E1 interface module (SIC-2E1-F), where F indicates fractional, supports:• Transmission/Receiving and handling of E1 data streams• CE1 (channelized E1) access• Remote loopback and local loopback functions, facilitating fault test and locationInterface specificationsTable 12 Interface specificationsItem DescriptionConnector type D15Number of connectors 1Interface standard • G.703• G.704Interface rate 2.048 MbpsCable type 75-ohm unbalanced coaxial cable (D15 to BNC)Operating modes • E1• CE1Supported services • Backup• Terminal access
