Anyone have any idea how to reroute the PSTN call from 1 cluster to another cluster's vg (MGCP)?
Phone A registered to Cluster A.
VG B registered to Cluster B via MGCP.
Cluster A & Cluster B is running as intercluster trunk without Gatekeeper.
Is it possible the phone A make the PSTN call via Cluster B's VG?
Sure, simply build route pattern pointing to the ICT and then on the other cluster ensure the CSS assigned to the trunk has access to the GW via either direct access to outbound RPs or intermediate translation patterns.