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TC35i新版西门子工业GSM模块是一个支持中文短信息的工业级GSM模块,工作在EGSM900和GSM1800双频段,电源范围为直流3.3～4.8V ,电流消耗——休眠状态为3.5mA，空闲状态为25mA，发射状态为300mA(平均)，2.5A峰值；可传输语音和数据信号, 功耗在EGSM900(4类)和GSM1800(1类)分别为2W和1W ,通过接口连接器和天线连接器分别连接SIM ...

SIP（Session Initiation Protocol）是由IETF定义，基于IP的一个应用层控制协议。由于SIP是基于纯文本的信令协议，可以管理不同接入网络上的会晤等。会晤可以是终端设备之间任何类型的通信，如视频会晤、既时信息处理或协作会晤。该协议不会定义或限制可使用的业务，传输、服务质量、计费、安全性等问题都由基本核心网络和 ...

sim300的at指令集，用于控制sim300完成GPRS数据传输，SMS接收发送，语音通话等功能

很好用的，短信发送平台，A simple UNIX client Allowing you to send SMS messages to mobile phones and pagers

The MAX481E, MAX483E, MAX485E, MAX487E–MAX491E, and MAX1487E are low-power transceivers for RS-485 and RS-422 communications in harsh environments. Each driver output and receiver input is protected against ±15kV electrostatic discharge (ESD) shocks, without latchup. These parts contain one driver ...

短信发送实现gprs猫发送短信息，wap push，push load，免提短信源代码.-gprs cat achieve this short message, WAP push, push load. Handsfree SMS source code

FMA is a free1 powerful phone editing tool allowing users to easily manage all of the personal data stored in their phones, via a number of different connections methods. FMA allows easy management of Phonebook (both SIM and Phone memory), SMS, Profiles, and Files stored on the phone. FMA can also a ...

源码..C#开发的手机短信发送接收程序，有兴趣朋友可以研究下-C# development of the SMS to send and receive proceedings, interested friends under study

华为CMPP2短信接口库（JAVA版本），希望能帮到各位，-Huawei CMPP2 SMS Interface Library (Java version), hoping to be able to help you,

The idea behind differential GPS is to remove as much errors as possible from the range measurements by establishing these errors at a reference site. In its most simple setup, a GPS receiver is located at a well surveyed position and its (pseudo) range measurements are compared with the actual calc ...