[1] I keep getting random anonymous extensions that are not register sending call invites to the system.
[2] However, I can see the outgoing call pass through but when I pick, there its no sound and the airtime is not used up.
[3] The inbound call does not work and no registered logs for this as well.
What could be the issue? Anyone to support on this? Thank you my geeks.
Those are what is known as “ghost calls” and are targeted at the telephone, and not ASTPP. It is why you seen nothing in the server logs.
Thus, it it not an issue for ASTPP.