Allied Telesis AT-AR256E - Manual (Page 33)

- 33 -
5.4 The DSL Link LED Is Always Off
1. Make sure you have a ADSL service. You should get some kind of information from
your ISP that states that the ADSL service is enabled. You can usually tell if the
service is enabled by listening to the phone line; you will hear some high-pitched
noise. If you do not hear high-pitched noise, contact your ISP.
2. Verify that the telephone cable is connected directly to the telephone wall socket and
the DSL input on the ADSL router.