Siemens 300 User Manual Page 52

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52
Appendix
Acoustic signals
Internal dial tone
3 x 0.2s tone and 0.3s pause, sequence repeated after 0.5s pause.
External dial tone
Steady tone
Ringing tone
Tone Pause Tone Pause Tone
0.8s 2s
Busy tone
0.5s 0.5s
Acknowledgement tone
Tone
0.8s
Error tone/range tone
4x0.1s
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