Inbound call but no welcome message is played

Hi Team,

We are using asterisk for our incoming call management and automated voice playback files.
Sometime we have users who dials the IVR number and report that nothing is being played and they hang up the call and then it connects. We tried the call and found out that when the user do not hear anything, in the logs, we are missing following line:

0x7f005c005960 – Probation passed - setting RTP source address to 66.241.99.236:18140

However, when the call is connected, we get this line in the call log.
Can someone please help?

What do you mean “they hang up the call and then it connects”? How can they hang up but connect?

What happens when you call the IVR from an outside line (your mobile phone). Can you replicate the issue?

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