Billion Electric Company BEC 7800(N) - Manual (Page 8)

Quick Start Guide
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4. ADSL Connection
Connect the supplied RJ-11 phone cable to the router’s ADSL port, and the other
side to the phone jack on the wall.
5. Splitter/ Micro-filter Connection
Splitter / Micro-filter are important for ADSL installation. It helps high-frequency
signals are directed to the ADSL modem, and low-frequency signals are directed to
the telephone or other analog voice-channel device to prevent inter-modulation
distortion and get good speed and stable ADSL sync rate.
a) Splitter connection
If the installation has only a single telephone and a single ADSL modem, then a
splitter can be employed.