新型电话终端用户扩展设备吴明ＳＸ１４１０ＲＦ—Ｂ型数字式全自动双系统集团电话是根据我国中小型企事业单位内部现代化管理对通俗的要求，新推出的新型电话终端用户扩展设备。与回内外同类产品相比，其独特之处在于，它集外线来话自动转换与内线分机全自动交换于一体，... New telephone terminal user extension equipment Wu Ming SX1410RF-B digital automatic dual system PBX is based on the internal modernization of small and medium enterprises in the country’s popular management requirements, the new telephone terminal user extension equipment. Compared with similar products back to the inside and outside, its unique is that it sets the automatic conversion of the outside incoming calls and extension extension automatic exchange in one, ...