Yes, they are based on the medium of human voice. Services such as telephones, calling card telephones, cellular phones, cordless phones are this type.
这类业务是以讲话的声音为媒介的，包括电话、磁卡电话、移动电话、无绳电话。
With the popularization of cars, there is a great demand for car telephones. But most mobile telephones don't have the function of off-hook, so it's very meaningful to develop a kind of car telephone.
当今随着汽车的日益普及，人们在驾驶中使用手机免提的需求也日益增强，但是绝大多数手机并不具备免提功能，因此开发一套车载手机免提系统非常有意义。
With the popularization of cars, there is a great demand for car telephones. But most mobile telephones don't have the function of off-hook, so it's very meaningful to develop a kind of car telephone.
当今随着汽车的日益普及，人们在驾驶中使用手机免提的需求也日益增强，但是绝大多数手机并不具备免提功能，因此开发一套车载手机免提系统非常有意义。
应用推荐