formula to cal. TCH N/A This topic has 0 replies, 1 voice, and was last updated 20 years, 6 months ago by navpreet. Viewing 1 post (of 1 total) Author Posts 11th September 2003 at 10:40 #36418 navpreetGuest I would like to know the formula to caculate TCH N/A. Author Posts Viewing 1 post (of 1 total) The forum ‘Telecom Design’ is closed to new topics and replies.