SendSF()

Since 16.24.0, 18.10.0, 19.2.0 Applications Found this useful? Upvote it. ×

Sends arbitrary SF digits on the current or specified channel.

Last reviewed 2026-04-14

SendSF(digits[,frequency,channel])
Dialplan Builder -- build your SendSF() command
List of digits 0-9 to send; w for a half-second pause, also f or F for a flash-hook if the channel supports flash-hook, h or H for 250 ms of 2600 Hz, and W for a wink if the channel supports wink.
Frequency to use. (defaults to 2600 Hz).
Channel where digits will be played
Full arguments reference
  • digits required - List of digits 0-9 to send; w for a half-second pause, also f or F for a flash-hook if the channel supports flash-hook, h or H for 250 ms of 2600 Hz, and W for a wink if the channel supports wink.
  • frequency - Frequency to use. (defaults to 2600 Hz).
  • channel - Channel where digits will be played
Description

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

Arguments
  • digits required - List of digits 0-9 to send; w for a half-second pause, also f or F for a flash-hook if the channel supports flash-hook, h or H for 250 ms of 2600 Hz, and W for a wink if the channel supports wink.
  • frequency - Frequency to use. (defaults to 2600 Hz).
  • channel - Channel where digits will be played
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