After Data Call at command not working Q24 plus

In my Q24 plus after end of data call i am not getting any response for AT commands from My PC terminal. Only after hardware reset at comands are working. Also after data call over the adl_atSendResponse(uart1,“text”) is not sending any string to terminal.

I am using UART1 for debugging and Uart2 is connected to some external device.

Data call is working and getting response through uart2 and the response getting back to my source modem to hyperterminal.

But my modem which is running openAT application will stops sending debug strings through adl_atSendResponse after data call end and also AT commands response also not working.

Please help with the issue.