Samsung AceLink SAM-335A User Manual page 39

If more than two telephones are used, more POTS micro-
filters are needed. Ask your AceLink ADSL modem provider to
purchase additional POTS micro-filters.
If the telephone, used with AceLink ADSL modem, is not
connected through a POTS
conversation quality will go down.
2-15
micro-filter, telephone