So-called friendly place has got an upheaval (5)
I believe the answer is:
tonga
'so-called friendly place' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'got an upheaval' is the wordplay.
'upheaval' indicates an anagram.
'got'+'an'='gotan'
'gotan' anagrammed gives 'TONGA'.
'has' acts as a link.
Can you help me to learn more?
(Other definitions for tonga that I've seen before include "Horse-drawn vehicle" , "part of Polynesia" , "Light vehicle in India" , "Pacific Ocean kingdom" , "Islands once ruled by Queen Salote" .)