UMTS_TTI This topic has 0 replies, 1 voice, and was last updated 14 years ago by varun Sharma. Viewing 1 post (of 1 total) Author Posts 20th October 2010 at 06:06 #64737 varun SharmaGuest What is TTI in UMTS and HSDPA. Author Posts Viewing 1 post (of 1 total) The forum ‘Telecom Design’ is closed to new topics and replies.