IP to IP / UCCX calls fail

Question

I`m doing a IP to IP call via CUBE,
the  ip to ip calls are working properly, but when I place a IP to IP UCCX  call, I press 1 to route to the agent and the call is dropped getting  the following error on the CUCM traces:
01:21:24.477 |StationCdpc - ERROR  active10: hold rejection|5,200,16,1.498662^10.21.18.7^ELDOR_4711
01:21:43.512  |Transferring - handleTransferErrorPreStart, ERROR fid=[140], Retaining  Calls, xferring[5, 98279219], xferred[5, 98279217]. infoCause=63,  clearCause=0|5,200,16,1.498667^10.21.18.7^ELDOR_4711
01:21:55.522 |MediaManager(35202)::wait_AuConnectErrorInd, mCleanupPreallocatedMTP=0|5,200,16,1.498669^10.21.18.7^ELDOR_4711
And after this the h.323 leg, drop the call.
10.21.18.7 = UCCX
Working call flow:
SPO PHONE -> SPO CUCM -> SPO H.323 GW -> VPN SITE TO SITE -> NEXA H.323 GW -> NEXA CUCM ->  NEXA PHONE
Non working call flow:
SPO SITE -> SPO H.323 GW -> VPN SITE TO SITE -> NEXA H.323 GW -> CUCM -> UCCX -> AGENT
I really appreciate any help provided.

Answer 1

Hi Jefferson,
I would start by looking at the CCX engine log to see why the transfer is failing. I assume that CTI port's CSS has the partition of the agent phone? The MIVR log should tell us why it is failing.
-thanks
Mohana