0 a sound that means that the phone you are calling is being used
1 a sound that means that the telephone you are calling is being used
Nilsson wrote the song after calling someone and getting a busy signal.
Brad tries to contact her through her cell phone, but only receives a busy signal.
Disaster planning experts like to say that trunked system users are likely to hear busy signals for the first time when a disaster occurs.
When calls resulted in a business, busy signal, recording, or refusal, interviewers called the next number.
Other volunteers reported being unable to get through to technical support and found themselves receiving either a busy signal or a try again later message.
The busy signal became the opening notes of the song.
An analogue telephone line may send tones such as a busy signal, reorder tone or dial tone to indicate a call has ended.
In both cases once the trunking capacity of the systems is fully used, all subsequent users will receive a busy signal.
