Same problem!
I have the same problem, Telenerd. The incoming calls from PSTN to my VoXalot number are dropped after 30 seconds, because of the lack of ACK message. I have tried to call to different VoXalot numbers, from different PSTN access numbers and the problem was the same. Attached is a file with the sequence of messages INVITE/SD, 100 Trying, 180 Ringing, 200 OK/SD 11 times and BYE. It is worthy to say that everything worked fine unitil the last month. I would like to ask the moderator to pass this problem to those can help to fix it.
Thank you.
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