Welcome to the community!
Does the humming noise affecting the service? If not, for your safety we recommend to report this to the Building Administrator.
Let us know should you require further assistance.
I am having a problem since I got installed my tpg FTTB.
I live on the top floor of a quiet but old building.
Since my connection has installed, I start hearing a weird sound, such a continuously humming apparently coming from the rooftop or from a wall.
I tried to disconnect every electrical appliance and the modem as well, but this crazy sound is still there and during night time is very difficult to relax and sleep.
Someone got same experience before?