Digital telephone exchanges in the United - Kunming, Yunnan telephone exchange large and leader 
 Wholesale center in the United telephone exchange (www.wopbx.com, Tel :0871 -8060018) Kunming Japan Information Technology Co., Ltd. specializes in the wholesale, retail [phone switch] [PBX] ※ ※ ※ [program-controlled telephone exchange [PBX]] professional installation, maintenance of telephone switches / PBX / program-controlled telephone switches / PBX. 
 JSY2000 series digital telephone switches】 【 
 JSY2000-S digital telephone exchanges] [maximum capacity of 80 lines (NO.7 Signaling) 
 JSY2000-M digital telephone exchanges] [maximum capacity of 576 lines 
 JSY2000-L digital telephone switches】 【maximum capacity of 1728 lines 
 JSY2000-FY over / fly fast series of digital telephone exchanges] [maximum capacity of 5376