CUCM TSP TAPI call disconnect not received for long duration calls

[ShankarP]

We use custom application based on TAPI LIB,  we noticed that the call disconnects are not received from the CUCM when the call duration is more than 30 mins.on the tsp debug trace we can see tspline:fireleine and tspcallstate events  but the relevant call information or CTspcallinfo::print() and is missing and the call related data is not passed to the tapilib application

[dstaudt]

Not aware of anything off the top that might cause that behaviour...might suggest opening a ticket with DevNet dev support so they can dig into the logs to see if there is an issue/config or app behaviour in play: https://developer.cisco.com/site/support/