How to calculate TMA in GSM1800 This topic has 0 replies, 1 voice, and was last updated 15 years, 7 months ago by Sothea. Viewing 1 post (of 1 total) Author Posts 6th May 2008 at 07:27 #52354 SotheaGuest Pls kindly help me to guide how to calculate TMA in GSM1800 Author Posts Viewing 1 post (of 1 total) The forum ‘Telecom Design’ is closed to new topics and replies.