Assertion: handset | /r/HasProperty | registered to up to 4 base units
Facets:
Source sentences:
text: Each handset can be registered to up to 4 base units for a total integrated system of 36 handsets and 4 base units.
text: For the DuraFon 1X, each base can register up to 9 handsets and each handset can be registered to up to 4 base units for a total of 4 bases and 36 handsets.