Formula This topic has 1 reply, 1 voice, and was last updated 19 years, 10 months ago by JCD. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts 25th May 2005 at 07:23 #41165 GoddieGuest Anyone to provide me with the formulae of TCH Blocking and TCH Congestion 26th May 2005 at 02:56 #41166 JCDGuest TCH Blocking – It expresses the number of voice calls that were unable to be performed due to a lack of resource. Tch Blocking = 100 * ((TCH call requests rejected due to lack or – successful DR)/All Tch Request) Author Posts Viewing 2 posts - 1 through 2 (of 2 total) The forum ‘Telecom Design’ is closed to new topics and replies.