Thanks for your detailed post.
I opened another thread, bit specific to the nature of problem.
What you is correct, although, the legacy EPABX will stay in place. So all the local extensions etc that are analog (intra-Co) etc will be handled through that as we don’t want to shift to rewiring and new phones immediately.
The legacy PBX is programmed such that 0+<10digit mobile> will send call out and earlier directly to PRI Line.
Now, that part is intercepted by FreePBX.
I still feel that the call is passed to s and “No match of DID or CID” indicates some problem like two stage dialing etc.
How can we get asterisk to wait for entire number to be punched in?
This is a more relevant topic to that issue and hope it helps someone else in the future so well documenting each problem is better. You many reply there
Thanks.