TONNET GPX 7000 large-scale program-controlled switches 
 Maximum capacity: 7,168 doors (mining free slot design) 
 Single cabinet 256, the maximum stack of 28 cabinet 
 DECT can be upgraded to wireless communication systems 
 Can be upgraded to SIP IP network communications system 
 Can be upgraded to WiFi wireless network communication system 
 Call Center can be upgraded customer service system 
 Can be upgraded to dual-CPU and dual sets of sets of redundant power supply 
 Network architecture adopted by Council can be multiple sets of remote fiber link 
 Amplified E1/T1/E & M / ISDN PRI 
 Could amplify the value of PC-based computer machine