TroubleshootingCSX400 and CSX400-DC User’s Guide 213Status 2 (STS 2) LED is RED WPIM-HDSL Installed in CSX400WPIM-HDSL is configured for either Full T1 and the WPIM is not able to establishsynchronization on Loop 2 with the remote HDSL circuit.• Verify using QuickSET of Local Management that one of the WPIM-HDSL 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 2 (STS2) LED is AMBERWPIM-T1, WPIM-E1, or WPIM-DI Installed in CSX400The device is in Yellow alarm mode. A Yellow alarm indicates that the CSX400 isreceiving proper framing from the Telco, but the Telco is not receiving proper framing.• Check for faulty or incorrect cabling between Telco and CSX400.• Request that the Telco verify the configuration and operation of the circuit.Status 2 (STS2) LED is GREENWPIM-SYNC Installed in CSX400The Port is operating normally, Clear to Send (CTS) has been received by your WAN device.• If it is not, check STS 1 to determine if the Port is Sending a Request to Send (RTS) to the CSU/DSU it is connected to.• Verify the cabling being used between the CSX400 and the CSU/DSU.• Check the CSU/DSU for proper operation.
