Echo Call This topic has 0 replies, 1 voice, and was last updated 16 years, 5 months ago by OMER_Telecom.. Viewing 1 post (of 1 total) Author Posts 7th November 2007 at 08:20 #49614 OMER_Telecom.Guest I need the main reasons for the “Echo Call” ,where the customer heard his voice “only” when he make a call. Author Posts Viewing 1 post (of 1 total) The forum ‘Telecom Design’ is closed to new topics and replies.