Firstly, a busy tone
is adopted to indicate the channel status and the data packet transmission [18-20].
The helper with higher priority can choose the earlier minislot to send its busy tone
Later, when the officers tried to reach him, the phone returned the busy tone
Many reported after calling the 0845 6006400 number they were met by a busy tone
Imagine the trauma of a bullied or abused child who finally finds the courage to pick up the phone only to receive a busy tone
A BT spokeswoman said: "For the whole of the UK network there will be call-gap in place which staggers the calls slightly so that everybody should get through which means they will be connected or get a busy tone
Customers may experience busy tones
, recorded voice announcements, or the call might go straight to voicemail during busy periods.
Silence, ring-back, busy tones
or any Custom Tones from the PCM wave file / wave streams