Overlaid and Underlaid in Ericsson Plan This topic has 0 replies, 1 voice, and was last updated 15 years, 6 months ago by Alex. Viewing 1 post (of 1 total) Author Posts 13th May 2009 at 04:51 #57004 AlexGuest Can anyone explain me about underlaid and overlaid concept in Ericsson network planning. Thanks Author Posts Viewing 1 post (of 1 total) The forum ‘Telecom Design’ is closed to new topics and replies.