
Z.
Nowhere in the telephone SINs does it prohibit a land line phone in a bathroom,  and in the country I am in right now, it is permitted and in Hotels quite common. In practice it causes no significant  problems. Most of the 230V world  permits an RCD protected socket if further than  60cm from the bath edge and out of line of splash from taps etc. 
 Like us, most accidental deaths in bathrooms are folk slipping on wet surfaces and hitting the head, or heart attacks.  Incidence of electrocution is way down, and we have our exploding hairdryer tangled lead incidents in comparable numbers,  just in the bedroom instead.
Mike
Nowhere in the telephone SINs does it prohibit a land line phone in a bathroom,  and in the country I am in right now, it is permitted and in Hotels quite common. In practice it causes no significant  problems. Most of the 230V world  permits an RCD protected socket if further than  60cm from the bath edge and out of line of splash from taps etc. 
 Like us, most accidental deaths in bathrooms are folk slipping on wet surfaces and hitting the head, or heart attacks.  Incidence of electrocution is way down, and we have our exploding hairdryer tangled lead incidents in comparable numbers,  just in the bedroom instead.
Mike
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