How many cat5e cables are used for a ptp 650 sysytem using a NIDU E1/T1 interface?

Currently using lan cable from NIDU to PSU to ODU. I cannot get T1's to talk. Am I using the correct port/cable configuration?

Charlotte, please see the diagram below that shows the correct cabling sequence for the Network IDU.  This information is also covered in the user guide.  Note the power connection from

You also need to make sure you install the software license key for T1/E1 support on your PTP 650 ODU.  You'll be able to tell if your PTP 650 is licensed for T1/E1 support in the capabilities summary in the installation wizard.