Green’s Dictionary of Slang

be quiet! shut up! stop doing that!

1895		Coburg Leader (Vic.) 20 July 1/7: Ring off, Gibb, as she is only kidding you.
1896		W.C. Gore Student Sl. in Cohen (1997) 14: ring off Stop talking.
1906		E. Dyson Fact’ry ’Ands 71: Shut up! D’yeh ’ear? [...] Arr-r-r ring off, cant yeh!
1910		Bulletin (Sydney) 18 Aug. 44/1: ‘Be hanged – it’s locked.’ / ‘Well, he might have locked it.’ / ‘Ring off! How the Hades could he get in, shut the door behind him, and padlock it on the outside, you Gaelic idiot?’.
1920		Marvel 24 July 16: Ring off, old thing!
1931		G.S. Schuyler Black No More (1971) 25: ‘Oh, ring off,’ growled Max. ‘That’s a lot of hooey.’.
1940		F. Sargeson ‘A Great Day’ in A Man And His Wife (1944) 27: Ring off, Ken said.
1953		Kramer & Karr Teen-Age Gangs 18: Mousey shouted, ‘Ring off, for Christ sake!’.