即具备防各种盗打的功能，并且不能影响IC卡话机的正常工作。
Namely possess and defend various kinds of and steal the function made, and can't influence the normal work of the IC card microphone.
家庭内各种设施例如电话机等的使用方法。
Best method to use each household appliance such as the telephone, stereo, television, etc.
当电话机没有“接通”时，各种线路按钮激活自动将第一根线路置于保留状态，不需要使用特殊的“保留”按键。
As long as a phone does not go "on-hook," activation of various line pushbuttons will automatically place the first line on hold without the use of a special "hold" button.
应用推荐