Alcad GRF-400 Manuel D'utilisation page 17

Fix the base of the telephone to the wall using the
studs and lag screws that have been supplied.
Close the telephone and fix the cover to the base
using the clamping screw.
D I G I T A L D O O R E N T R Y S Y S T E M S
Make the electrical connections. Consult wired
diagrams. Check the adjustment. Consult Page
18.
Connect the cord between the base of the telephone
and the receiver.