gprs_at

代码说明：

  This document describes the CDMA AT command, its syntax, its responses, and result codes. It serves as the reference for wireless application development based on the CDMA modem and for its integration and testing. The intended audience is expected to be familiar with CDMA data services protocol and AT modem commands. This document is also intended for use in the North American market. SIM/R-UIM and its related AT commands are not documented here.