How to fix TBF Congestion This topic has 2 replies, 1 voice, and was last updated 7 years, 2 months ago by Magaye Aye. Viewing 3 posts - 1 through 3 (of 3 total) Author Posts 26th March 2014 at 14:50 #69568 MickmasGuest Hi all, I am facing big issue on TBF Congestion. BTS3900_GSM is working over IP with Fix Abis as a Flex Abis mode. No high DL Throughput on this site. Am thinking that it can be parameters configuration issue. Someone can help me,Please. 26th March 2014 at 19:36 #69569 pixGuest hi again, tbf congestion can be caused by – radio congestion (not enough pdch to serve required tbf) – abis congestion – Gb congestion – bsc board congestion try to find counters which will provide a more detailed cause of the congestion.Check also the load of all the interfaces/boards described above. regards pix 26th September 2016 at 12:53 #69570 Magaye AyeGuest Change the Flexible Mode in Fixe mode ,Can help you to improve your Throughput Author Posts Viewing 3 posts - 1 through 3 (of 3 total) The forum ‘Telecom Design’ is closed to new topics and replies.