How Can I Use Aplication Dial D( called📲progress ) option

Asterisk Asterisk Support
1

Hello,

What does it mean “called:calling:progress” in D option. Could you give me an example.

2

Dial(IAX2/user@provider/5555555555,D(12345))
exten => 66,1,Dial(SIP/1,D(1234)))

3

it means dtmf send just 1234?

4

It means that the DTMF string 1234 will be sent to the called party after they have answered, but before they are bridged with the calling party.

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