Those values for 'w' and 'W' are correct. They can be used in send_dtmf or queue_dtmf.
-MSC

On Tue, May 10, 2016 at 4:54 AM, Michael Jerris <mike@jerris.com> wrote:
You can use w and W in dtmf strings to insert pauses.  I think w is 500ms and W is 1s but test to be sure

Sent from my iPad

> On May 10, 2016, at 3:52 AM, amani mansour <amani.mansour2@gmail.com> wrote:
>
> Hi all,
>
> How we can configure FreeSWITCH to send DTMF  for example :4 after(1 seconde) 8 after(1 second)  9
>
> Best regards
> Amani