Rings friends about ecstasy (5)
I believe the answer is:
peals
'rings' is the definition.
(pealing is a kind of ringing)
'friends about ecstasy' is the wordplay.
'friends' becomes 'pals' (pal is a kind of friend).
'about' indicates putting letters inside.
'ecstasy' becomes 'E' (informal term for the drug).
'pals' going around 'e' is 'PEALS'.
(Other definitions for peals that I've seen before include "Loud sounds of bells or laughter" , "Lapse in bell sounds" , "Leaps about with bursts of laughter" .)