GOS This topic has 0 replies, 1 voice, and was last updated 13 years ago by YOYO. Viewing 1 post (of 1 total) Author Posts 30th March 2011 at 17:18 #66080 YOYOGuest why are SDCCHs dimensioned with a lower GOS or service compared to TCH Author Posts Viewing 1 post (of 1 total) The forum ‘Telecom Design’ is closed to new topics and replies.