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Inexpandable PABX System[Jul.12,2007] [Others]1. FSK/DTMF CID. 2. Transferred CID 3. Doorphone Interface. 4. Elegant fashion Design. 5. Ringing Pattern for different calls. 6. Flexible call setting: Toll Restriction/limited call Duration /... BetterSun Electron S & T Co., Ltd. Similar Tradeleads - Save rose777.en.ec21.com/product_detail.jsp?group_id=GC01628606&product_id=CA02140812&product_nm=Inexpandable_PABX_System |