The three 30-second ads, which break next week, use humorous scenarios to show how video telephony can enhance communication.
Colin Wise, BT's senior advertising manager, said: "The ads are an example of how Broadband from BT can improve the way we communicate by turning your computer into a videophone."
In the first spot, "bloke", a university student desperately cleans his messy flat before sitting down at his computer to talk to his mum and dad via his webcam.
He manages to convince his parents he is behaving himself but his cover is blown when his parents see a half-dressed man with an "L" plate around his neck appear from behind the sofa. In "dressing gown", the ad ends with a girl wearing a dressing gown ruffling the student's hair as she walks past. In the final ad, "mum and dad", the camera pans round to reveal the student's parents are undressed from the waist down. The endline reads: "BT. More connections. More possibilities."
The ads were written by Ben Kay and Cameron Mitchell and art directed by Paul Young. They were directed by Jackie Oudney through Bliss Films.
Media planning is being handled by PHD with media buying through The Allmond Partnership.
The ads, which will run until 8 February, will be shown on terrestrial and satellite TV channels, centred around primetime family weekend viewing.