Wodehouse Offing|II, XV, and XIX|“Mr Wooster?†“Oh, hullo, Lady Wickham.†... “Hullo, Bobbie,†I said. “Hullo, Bertie,†she said. “Hullo, Upjohn,†I said. The correct response to this would have been “Hullo, Woosterâ€, but he blew up in his lines and merely made a noise like a wolf with its big toe caught in a trap. ... But as I approached the telephone and unhooked the thing you unhook, I was far from being at my most nonchalant, and when I heard Upjohn are-you-there-ing at the other end my manly spirit definitely blew a fuse. For I could tell by his voice that he was in the testiest of moods. Not even when conferring with me at Malvern House, Bramley-on-Sea, on the occasion when I put sherbet in the ink, had I sensed in him a more marked stirred-up-ness. “Hullo? Hullo? Hullo? Are you there? Will you kindly answer me? This is Mr Upjohn speaking.â€
(UK, dated) Alternative form of hello (expressing puzzlement or discovery)
1939, Country Life (volume 85, page 290)"Hullo, there's a monkey's wedding," said my wife's niece, a girl of about twenty, born in South Africa ... She was looking out on the lawn, and it was one of those lovely April mornings with sunshine and rain alternating...