Tie Lines This topic has 1 reply, 1 voice, and was last updated 21 years, 1 month ago by Nizze. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts 25th September 2002 at 08:25 #34681 BosottoGuest Hi, Can anyone help me to understand tie line, and how it differs from a T1 line. And howmany voice channels an tie line can carry. Thanks 29th October 2002 at 12:02 #34682 NizzeGuest Tieline is just a line connecting two exchanges. It can be a T1, E1 or anything else…. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) The forum ‘Telecom Design’ is closed to new topics and replies.