Mixed fleet operator here, and cabin-cockpit crew procedures based on interphone only.
TO/LDG memo? ...... "TO/LDG - one blue, cabin secure" Other colleagues sometimes think that's too formal, and just go "TO/LDG - no blue", obliviating the CABIN .... READY signage.
No issues, as the item itself is not monitored for high level ECAM alerts.
Last edited by FlightDetent; 19th November 2017 at 07:34.