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If your phone system normally uses pulse dialling you can switch between long and short DTMF tones if required. For some teleservices the standard tones sent out by the phone are too short. In this case the phone must be switched to long tones.
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Select
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Press
The phone now uses short DTMF tones.
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Select
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Press
The phone switches to long tones for the duration of the call. If the phone is set to long tones, the tones are transmitted for the same length of time as you keep the keys pressed down.
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Press for one second
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