Contemporary Telephone Tones used within the United Kingdom Public Telephone Network 
 
These WAV files contain example samples of the telephone tones currently being used in the UK public telephone network.
 
Tone
Meaning
Dial Tone
Please dial the number you require (continuous tone)
Ring Tone
The number you have dialled is is ringing 
Busy Tone
The called subscriber's line is engaged on another call 
Equipment Engaged Tone
The equipment in the telephone network is busy - please try later 
Number Unobtainable Tone
The number you have dialled is not a valid number/code (continuous tone)

 
 

Rob Grant's Telephone Pages