This nursing home where I work is a fairly large building and an odd shape (with a new extension). that new building has a steel frame, and there are many pipes (for hot and cold water), plus a kitchen and laundry, with lots of metal connected to earth ground for eletrical safety.
The main Gigaset base station would not have enough signal for the entire building, so I have set up a repeater. This is called an RTX4002 in Europe (it is called a SNOM R3 in the USA and may use different radio frequencies) and is designed in Denmark.
This system is still under test so I have put the “chirp” noise on when the repeater is active. When there is no extra noise, the telephone is communicating directly with the main Gigaset base station. The signal from the repeater does cut out where it is shielded by the kitchen and laundry, though it would be unusual for nurses to be in those areas and there is a fixed telephone in the kitchen for 999/112 calls (though barred out for any other external calls)
I did this test outside the building, partly to avoid being knocked over by wheelchairs, trolleys etc which is always a risk to maintenance staff in healthcare buildings (in the main hospital many wear a orange or yellow vest even inside the building), plus marching through an old peoples home in Northern Europe with a German telephone playing any music that sounds “a bit German” can be misinterpreted, especially by visitors (though the original was written way after WW II, the BBC in the UK made it popular acrosss Europe, and this is the Dutch version). There is also the risk that any resident might unexpectedly rise from their chair and shout “Heil Hitler!” (some medical conditions trigger flashbacks of past actions) and that is an official “safeguarding incident” (its happened more than once in nursing homes across Europe!)
https://www.youtube.com/watch?v=3-R2e02N50U
DECT Repeaters
