• Changdexun D152 hotel program-controlled telephone exchange 4 in 96 out 104 112 136 144 out IVR color ring navigation emergency alarm broadcast 128-port voice internal line switch door lock
  • Changdexun D152 hotel program-controlled telephone exchange 4 in 96 out 104 112 136 144 out IVR color ring navigation emergency alarm broadcast 128-port voice internal line switch door lock
  • Changdexun D152 hotel program-controlled telephone exchange 4 in 96 out 104 112 136 144 out IVR color ring navigation emergency alarm broadcast 128-port voice internal line switch door lock
  • Changdexun D152 hotel program-controlled telephone exchange 4 in 96 out 104 112 136 144 out IVR color ring navigation emergency alarm broadcast 128-port voice internal line switch door lock
  • Changdexun D152 hotel program-controlled telephone exchange 4 in 96 out 104 112 136 144 out IVR color ring navigation emergency alarm broadcast 128-port voice internal line switch door lock
Changdexun D152 hotel program-controlled telephone exchange 4 in 96 out 104 112 136 144 out IVR color ring navigation emergency alarm broadcast 128-port voice internal line switch door lock
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