Korea 440 480 1s/2s
Singapore 425 x 1s/2s
Spain 425 x 1.5s/3s
Taiwan 440 480 1s/2s
United Kingdom 425 x 1s/4s
Dial Tone
Dial Tone
Frequency
1
( Hz)
Frequency
2
(Hz)
Cadence
On/Off
American 350 440 0s/0s
Bulgaria 425 x 0s/0s
China 450 x 0s/0s
France 425 x 0s/0s
Germany 425 x 0s/0s
Italy 425 x 0s/0s
Japan 400 x 0.25s/0.25s
Korea 350 440 0s/0s
Singapore 425 x 0s/0s
Spain 425 x 0s/0s
Taiwan 350 440 0s/0s
United Kingdom 395 x 0s/0s
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