SendDTMF()

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Sends arbitrary DTMF digits

Last reviewed 2026-04-14

SendDTMF(digits[,timeout_ms,duration_ms,channel,options])
Dialplan Builder -- build your SendDTMF() command
List of digits 0-9,*#,a-d,A-D to send also w for a half second pause, W for a one second pause, and f or F for a flash-hook if the channel supports flash-hook.
Amount of time to wait in ms between tones. (defaults to .25s)
Duration of each digit
Channel where digits will be played
Answer the channel specified by the `channel` parameter if it is not already up. If no `channel` parameter is provided, the current channel will be answered.
Full arguments reference
  • digits required - List of digits 0-9,*#,a-d,A-D to send also w for a half second pause, W for a one second pause, and f or F for a flash-hook if the channel supports flash-hook.
  • timeout_ms - Amount of time to wait in ms between tones. (defaults to .25s)
  • duration_ms - Duration of each digit
  • channel - Channel where digits will be played
  • options
    • a - Answer the channel specified by the channel parameter if it is not already up. If no channel parameter is provided, the current channel will be answered.
Description

It will send all digits or terminate if it encounters an error.

Arguments
  • digits required - List of digits 0-9,*#,a-d,A-D to send also w for a half second pause, W for a one second pause, and f or F for a flash-hook if the channel supports flash-hook.
  • timeout_ms - Amount of time to wait in ms between tones. (defaults to .25s)
  • duration_ms - Duration of each digit
  • channel - Channel where digits will be played
  • options
    • a - Answer the channel specified by the channel parameter if it is not already up. If no channel parameter is provided, the current channel will be answered.
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