http://pastport.jp/user/caltta ja-JP Caltta Technologies Co., Ltd. (originally from ZTE), established in 2012, is dedicated to leading the convergence of global PMR communications.With over 700 experienced professionals and over 400 trunking technology patents. 2023-07-19T16:26:41+0900 http://pastport.jp/user/caltta/timeline/caltta caltta http://pastport.jp/user/caltta/timeline/caltta