Call drop cause 98 This topic has 0 replies, 1 voice, and was last updated 11 years, 5 months ago by Flower. Viewing 1 post (of 1 total) Author Posts 30th June 2011 at 12:22 #66721 FlowerGuest Hi All, A few cells in our network has many call drops with cause 98. I can not find any information what this means. The only information that I have about this is: Cause value = 98 Message type not compatible with protocol state This cause indicates that the equipment sending this cause has received a message not compatible with the protocol state (section 8.4). Does anyone knows what this means? Thanks in advance, Author Posts Viewing 1 post (of 1 total) The forum ‘Telecom Design’ is closed to new topics and replies.