3.1 functional characteristicsThe host call extension, extension calls, unlockThe host can be extended to two keysEvery button can bring 4 extensionsThe first extension by four ring at the same time, can answer anyYou can swipe to unlock IC\IDThe extension of 4 inch and 7 inch optional
3.1 functional characteristicsThe host call extension, extension calls, unlockThe host can be extended to two keysEvery button can bring 4 extensionsThe first extension by four ring at the same time, can answer anyYou can swipe to unlock IC\IDThe extension of 4 inch and 7 inch optional
3.1 functional characteristicsThe host call extension, extension calls, unlockThe host can be extended to two keysEvery button can bring 4 extensionsThe first extension by four ring at the same time, can answer anyYou can swipe to unlock IC\IDThe extension of 4 inch and 7 inch optional