Dynamix 4-Band VDSL CO/CPE Modem User Manual page 22

Physical Configuration
If problems occur after altering the network configuration, restore the original connections, and try to track the problem down by
implementing the new changes, one step at a time. Ensure that cable distances and other physical aspects of the installation do not
exceed recommendations
System Integrity
As a last resort verify the switch integrity with a power-on reset. Turn the power to the switch off and then on several times. If the
problem still persists and you have completed all the preceding diagnoses, then contact your dealer
4-Band VDSL CO/CPE MODEM USER'S MANUAL Ver. A.2
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