Yes: this is because on most CCs such a long talk time would be considered a system error, as call turnaround is much much faster. You can edit configuration.properties and change the following two paramenters:
#If an ongoing call has a wait time that exceeds this value, drop it. 0: ignore
default.maxOngoingWaitTime=1000
#If an ongoing call has a talk time that exceeds this value, drop it. 0: ignore
default.maxOngoingTalkTime=2000
Try setting them to 3600 (1hr) or 7200 (2hrs).