深圳電話交換機維修,集團電話維修,程控交換機維修愛樂程控交換機維修、銷售、安裝調試、維護、擴容愛樂HJD-80A，HJD-80B,SW-2000H,SW-2000DJSY2000系列數字交換機西門子集團電話維修、銷售、安裝調試、維護、擴容西門子Hipath1800國威程控電話交換機維修、銷售、安裝調試、維護、擴容國威WS824-Q208,WS824-3型,WS824-9型,WS824-10型,WS824-9D,WS824-5A,WS824-6型,WS824-6A,WS824-6D,WS824-4D王牌集團電話維修、銷售、安裝調試、維護、擴容王牌AF-208,AF-308,AF-416,AF-424,AF-432,AF-100,AF-848威譜集團電話維修、銷售、安裝調試、維護、擴容威譜TDMX2000F,TDMX2000E,TDMX2000B