Markdevoll,
Try setting the All Transient Displays flag to No on one of your stations and see if that works. If not then set the Alternate Transient Display Timer to Yes and then go to Timers and Limits and set the Digital/IP Phone Alternate Display Timer from 10 to 1 and see if that works.
Obviously test this on a single phone first to see if it works prior to implementing it on all stations.
Thanks,
TE