Cause Value 4 This topic has 0 replies, 1 voice, and was last updated 15 years ago by RG. Viewing 1 post (of 1 total) Author Posts 13th October 2009 at 05:56 #59149 RGGuest Hi, Please help me to know the reason for the Call drop due to Cause Value 4 : Abnormal release, no activity on the radio path”. Regards Author Posts Viewing 1 post (of 1 total) The forum ‘Telecom Design’ is closed to new topics and replies.