3CX call flow to trigger a callback based on the received DTMF

[jawadaliqamar]

Can someone guide please, How can I generate the below flow in 3CX CFD v18 App?

1. Receive a call from CUCM SIP Trunk on 8000. 8000 is added as a DID under CUCM SIP Trunk IP in 3CX.
2. CUCM sends this DTMF "444XX5444XX#" automatically to 3CX after receiving SIP 200 OK (call is connected). It's not a user input. XX could be any digits between 0-9.
3. 3CX should get the first 5 digits from this DTMF, discard the rest and trigger a callback to this 5-digit number automatically via CUCM SIP trunk.

 

[edossantos_sipcaller]

You can route the inbound call in 3CX to a CFD app, which can use the User Input component to get all those digits. Then you use an expression like:
LEFT(userInput.Buffer,5)

to get the first 5 digits. And then transfer the call to that number.

You need to ensure that a call to a 5 numbers digit like that will be routed back to CUCM according to outbound rules.