http://www.codeguru.com/columns/dotnet/programming-sms-with-a-gsm-modem.html
http://thoughtfly.iteye.com/blog/1538495
http://www.cnblogs.com/zcy_soft/p/3738947.html
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原文：http://www.cnblogs.com/diyunpeng/p/6253693.html
