TCH Drop per cause This topic has 0 replies, 1 voice, and was last updated 16 years, 5 months ago by Ahmed. Viewing 1 post (of 1 total) Author Posts 29th March 2008 at 06:48 #51729 AhmedGuest Dears/Pix/everbody please we have in siemens vendor ,how i can specified TCH drop quality ,level,…. please help me abot Author Posts Viewing 1 post (of 1 total) The forum ‘Telecom Design’ is closed to new topics and replies.