Cabletron Systems Cabletron CyberSWITCH CSX400 - Manual (Page 225)

Troubleshooting
CSX400 and CSX400-DC User’s Guide 211
WPIM-HDSL Installed in CSX400
WPIM-HDSL is configured for either Full or Fractional T1 and the WPIM is not able to establish
synchronization on Loop 1 with the remote HDSL circuit.
• Use QuickSET or Local Management to verify that one of the WPIM-HDSLs is involved in the
connection 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 5
Unshielded Twisted Pair copper wiring is required. One pair (2 wires) for Fractional T1, two
pair (4 wires) for Full T1. The presence of bridged taps and multiple wire segments connected
together to form the loop may reduce the maximum distance usable between the Remote and
Local devices. Wire gauge has an impact on the distance which can be supported as well. The
maximum distance is 12,000 feet using 24 AWG wiring.
• Verify the gauge and condition of the wire. A trained line technician may be necessary to
determine this.
• Verify that the distance between the Remote and Local units is less than 12,000 Feet.
Status 1 (STS1) LED is AMBER
WPIM-DDS Installed in CSX400
The 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 GREEN
WPIM-SYNC Installed in CSX400
The Port is operating normally; Request to Send (RTS) has been activated by your WAN device. If
it is not, use the following steps:
• Use QuickSET or Local Management to make sure that the WAN interface on the local device
is configured properly.
• Verify the cabling being used between the CSX400 and the CSU/DSU.