SIM700D Hardware design guide. This document is helpful in GSM hardware design using SIM700D gsm module

AT Command guide for SIM700D. The GSM Edge data module. It is SMD type.

这个SIMCOM公司生产的SIM700模块的数据手册，里面好多个PDF文件，比较全面，这个资料比较难找。-This SIMCOM produced SIM700 module data sheet, which a good number of PDF files, more comprehensive, more difficult to find this information.