Guoteng hands-free call chip GM4158

yanmei

Guoteng hands-free call chip GM4158 [Copy link]

GM4158 is a telephone call chip with hands-free calling function. It contains the functions that an analog call chip should have. With the ringing and dialing chips, it can form a complete telephone. In addition, this chip can also be used to build a telephone line call system with more complex functions.