Drop Calls- User Busy This topic has 1 reply, 1 voice, and was last updated 12 years, 8 months ago by Deepak kumar vidyarthi. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts 4th July 2010 at 14:44 #63442 BilalGuest Hello, I am finding so many drop calls with CC cause valu 17 (user busy) at all of my BSCs. Although the connection is in talking phase and the calls drop because of User busy. Any guidance where the mistake is? 11th July 2010 at 08:54 #63443 Deepak kumar vidyarthiGuest can any one please tell me call flow of voice-call and data-call Author Posts Viewing 2 posts - 1 through 2 (of 2 total) The forum ‘Telecom Design’ is closed to new topics and replies.