Incoming calls can be rejected while ringing. How can this function be deactivated in XPhone Client?
Open the admin interface of the XPhone Server. Switch to the Telephony > Gateways > Fixed network section. There, open the property of the telephony gateway concerned. There you will find "Parameter sets for lines (advanced settings)". There is the entry STANDARD, mark it and click on EDIT.
Click on "Add..." Write at NAME "MaskDropStates" and assign the value 1048573 there.
Click on "Apply", "Apply" and "Save".