We are working on a caption solution. While my caption/message screen is opened IP phone unable to pass DTMF to called IVR.
 
Enenthough if services screen is opened during call to IVR, Cisco IP phone unable to send DTMF to IVR.
 
Is there any configuration at CUCM end for above issue?
 
Thanks,
Umesh

With the XML application visible and in focus, keypad input will be directed to the application, not the the phone UI - per my understanding the behaviour your describe is per design...no configuration to modify this behaviour.