I am having an issue with landing and inbound call through MGCP gateway to IP Phone that belongs to a partition 1ST-PT:
PSTN->E1->2811->MGCP->CUCM 7.0.1->IP Phone
1) As soon as I take out IP Phone from it's partition into <none>, inbound call lands just fine
2) If I put it back into 1ST-PT partition which is part of GW-CSS, while GW-CSS is assigned to MGCP E1 Port, it fails
3) Other IP phones behave correctly towards this partition - they can call it internally as soon as their CSS contains 1ST-PT
4) Assigning ALL-CSS (contains all partitions) to MGCP E1 Port does not help either
It seems as if GW-CSS does not get assigned to MGCP E1 Port, so it can never find a phone in 1ST-PT. I even restarted the cluster to no avail.