SIC-1TPRI/SIC-1T1-F 33Figure 24 Extending an E1 120-ohm balanced twisted pair cableStep 4: Check the status of LINK LED on the SIC-1EPRI/SIC-1E1-F panel: ON meansthe link is connected and OFF means the link is not connected. In the latter case,check the line.SIC-1TPRI/SIC-1T1-FIntroduction 1-port channelized T1/CT1/PRI compatible interface card (SIC-1TPRI) supports:■ Transmission/Receiving and handling of T1 data streams;■ CT1 (channel T1) access;■ ISDN PRI function;■ Remote loopback and local loopback, facilitating the effective and flexibledebugging.It is possible to use the card for multiple purposes through differentconfigurations.Following are the differences between SIC-1TPRI and 1-port Fractional T1 interfacecard (SIC-1T1-F):■ FT1 mode of SIC-1T1-F can support only one channel bundle (the rate is n × 56kbps, n=1-24), while the 24 channels can be grouped into multiple arbitrarybundles by SIC-1TPRI.■ SIC-1T1-F does not support PRI mode.Interface Attributes The interface attributes of SIC-1TPRI/SIC-1T1-F are given in the following table:RouterNetworkdevices suchas DDNDB-15Network interface connectorRJ-45 RJ-45120-ohm balanced twisted pair 120-ohm E1 trunk cableTable 8 Interface attributes of SIC-1TPRI/SIC-1T1-FAttribute DescriptionConnector type RJ-45Number of connectors 1
