Peripheral driver of the Hardware Driver Foundation (HDF) | HDF外设驱动

Establishing communication with RIL Adapter | 电话基础服务模块主要功能实现与RIL Adapter进行通信

Managing all types of call connections | 管理各种类型的通话连接

Implementing basic call services over carrier networks | 负责运营商网络的基础通话实现

Cellular communication modem interface adaptation layer for implementing communication with the modem | 蜂窝通信modem接口适配层，负责与modem通信

Peripheral driver HDI interface definition | 外设驱动HDI接口定义