SDCCH This topic has 0 replies, 1 voice, and was last updated 15 years, 4 months ago by nish. Viewing 1 post (of 1 total) Author Posts 10th December 2008 at 06:36 #54991 nishGuest Dear All I want to know, what are the occasions that SDCCH channel is used, as far as I know… >> during call set up >> Location updating >> SMS flow…. Then what are the others…… Author Posts Viewing 1 post (of 1 total) The forum ‘Telecom Design’ is closed to new topics and replies.