Routing Indicator This topic has 0 replies, 1 voice, and was last updated 13 years, 7 months ago by Trial. Viewing 1 post (of 1 total) Author Posts 2nd September 2010 at 08:30 #64188 TrialGuest Whats the main difference between using RI=GT or RI=SSN (routing indicator). when to use each type of routing? Author Posts Viewing 1 post (of 1 total) The forum ‘Telecom Design’ is closed to new topics and replies.