sim300开发文档，主要包括电话接听和拨打、中英文短信的发送与读取、彩信的发送与读取等。
sim300 development documents, including telephone answering and call, send and read English SMS, MMS send and read. (2013-01-25, PDF, 1990KB, 下载66次)
用于彩信的操作AT指令，较为详细的描述了怎么用彩信猫通过AT指令发送彩信。
Used for the operation of the MMS AT instruction, relatively detailed describes how to use multimedia message cat through the AT command sending MMS.
(2012-08-28, PDF, 6259KB, 下载48次)
Compressed audio format developed by Ericsson used by many 3G cell phones for voice recordings such as MMS messages incorporates the Algebraic Code Excited Linear Prediction (ACELP) algorithm, which is designed to efficiently compress human speech audio.
Compressed audio format developed by Ericsson used by many 3G cell phones for voice recordings such as MMS messages incorporates the Algebraic Code Excited Linear Prediction (ACELP) algorithm, which is designed to efficiently compress human speech audio. (2012-08-03, PDF, 253KB, 下载5次)
GSM模块MMS命令应用指导,无线通信，彩信开发
GSM module MMS demand and application guide (2011-07-25, PDF, 784KB, 下载24次)
描述了一下彩信MMS的WAP MMS 客户端传输，无线应用协议等
Gave a description of the WAP MMS MMS MMS client transmission, wireless application protocol, etc. (2011-01-11, PDF, 199KB, 下载2次)
以nokia手机为例子介绍多媒体信息服务的格式，一本很好的开发彩信的技术文档，值得推荐
Nokia mobile phone as an example to introduce the format of multimedia information services, a very good development of technical documentation MMS, it is recommend (2009-03-06, PDF, 751KB, 下载134次)
oma-mms-enc-v1_2-20030915-c mms彩信协议的详细文档version1.2版 包括mms格式的说明
oma-mms-enc-v1_2-20030915-c mms MMS agreement version1.2 detailed documentation includes an explanation of the format mms (2008-04-30, PDF, 595KB, 下载98次)