Telkom ADSL 5102G Instruction Manual page 11

the LAN Link and ADSL line LEDs are lit. If they are not, verify that you are using the proper
cables.
Ensure that all other devices connected to the same telephone line as your Telkom router
(e.g. telephones, fax machines, analogue modems) have a line filter connected between
them and the wall socket and ensure that all line filters are correctly installed and the right
way around. Missing line filters or line filters installed the wrong way around can cause
problems with your ADSL connection, including causing frequent disconnections
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