TroubleshootingCSX400 and CSX400-DC User’s Guide 211WPIM-HDSL Installed in CSX400WPIM-HDSL is configured for either Full or Fractional T1 and the WPIM is not able to establishsynchronization on Loop 1 with the remote HDSL circuit.• Use QuickSET or Local Management to verify that one of the WPIM-HDSLs is involved in theconnection is set to Master (Local) Timing and that the other one is set to Slave (Loop) Timing.• Verify the use of proper cabling for the HDSL connections. Category 3 or Category 5Unshielded Twisted Pair copper wiring is required. One pair (2 wires) for Fractional T1, twopair (4 wires) for Full T1. The presence of bridged taps and multiple wire segments connectedtogether to form the loop may reduce the maximum distance usable between the Remote andLocal devices. Wire gauge has an impact on the distance which can be supported as well. Themaximum distance is 12,000 feet using 24 AWG wiring.• Verify the gauge and condition of the wire. A trained line technician may be necessary todetermine this.• Verify that the distance between the Remote and Local units is less than 12,000 Feet.Status 1 (STS1) LED is AMBERWPIM-DDS Installed in CSX400The DDS circuit is Out of Service (OOS).• Contact your WAN DDS Service Provider and have them test the operation of your DDS circuit.Status 1 (STS1) LED is GREENWPIM-SYNC Installed in CSX400The Port is operating normally; Request to Send (RTS) has been activated by your WAN device. Ifit is not, use the following steps:• Use QuickSET or Local Management to make sure that the WAN interface on the local deviceis configured properly.• Verify the cabling being used between the CSX400 and the CSU/DSU.
