Lisa Harrison, from East Midlands Ambulance Service, talked Mr Jelley through giving a heart massage to revive his one-year-old son.
BBC: 999 worker helps save Lincolnshire baby's life
2.
"When the paramedics first arrived, they told us there was no chance, " said Mr Jelley's partner Katherine Brooks, Mylo's mother.
BBC: 999 worker helps save Lincolnshire baby's life
3.
In March, Andrew Jelley, father of baby Mylo, called 999 from Sutton on Sea after he found his son lying face down in a pond, apparently not breathing.
BBC: 999 worker helps save Lincolnshire baby's life