206 CHAPTER 4: F LEXIBLE INTERFACE CARDSConnecting the InterfaceCablec CAUTION:■ Some measures are taken to protect FIC-1VE1 module. Still, you arerecommended to install a special lightning arrester at the input end of itsconnection cable to obtain better lightning protection when the cable is ledoutdoors;■ Read the mark identifying a port before you connect a cable to it, making sureit is the correct port. Wrong connection tends to damage the MIM and eventhe Router.Step 1: Plug the DB-15 connector of the cable into the DB-15 port on theFIC-1VE1 module and fasten the screws;Step 2: Connect the RJ-45 connector of the cable to:■ The peer device directly, if the resistance of the port to be connected is120-ohm, and there is no need to extend the cable;■ A network interface connector and then the peer device using another E1120-ohm balanced twisted pair cable, if the resistance of the port to beconnected is 120-ohm, and there is a need to extend the cable, as illustrated inthe following figure.Figure 253 Extending E1 120-ohm balanced twisted pair cable■ The peer device using a 75ohm-to-120ohm adapter, if the resistance of thepeer device is 75-ohm;Step 3: Power on the Router and check the LINK LED on the FIC-1VE1 panel. It isOFF when fault has occurred on the link. In this case, please check the link.FIC-1VT1Introduction 1-port T1 voice interface module (FIC-1VT1) can handle dense voice signals in VoIPsystem. It provides a CT1/PRI port, allowing the access of 24 channels of voicesignals.n ■ VCPM is provided to users together with FIC-1VT1. Users can select VPMmodule as needed.■ VPM module is installed on the main board of FIC-1VT1.Router VoiceDeviceDB -15Network interfaceRJ-45 RJ-45120-ohm balanced 120-ohm E1trunk cabletwisted pair cable connector
