Now, that is very correct.
Your previous posts were confusing, you said that the BSC/MSC fails to decode the message…. It wasn’t correct, because (as you now write) BTS and BSC processes the message as usual.
And the MSC won’t even see the message.
And of course, after the IMMEDIATE ASSIGNMENT from the BSC to the MS, there is no answer… So the flow stops here.
Sorry to tire you out, but Ali is a shark that just won’t let go 😉