ifc协议文档下载：
http://www.ieee.org/index.html
http://www.ietf.org/
3gpp协议文档下载：
http://www.3gpp.org
sctp:
http://wenku.baidu.com/link?url=WFpYIlfnWP9t-clToxHWOp2S56R8UYWCVOt72EH0CGv8hbq4ctBEfTZo3PaIsdZtmAoCtCPMl-1Zz2wJUq3wX9Ymejb1DYWJQQtjI2Egb03
m2ua:
http://wenku.baidu.com/link?url=xv49_55sHH5Il3fqf7iI56Z5W1JejSG1L4udH5Xyllf4o3nxqwx4e-0E-3sC-rF6r223uQ6Qi1Ro5Wx2VpK7oahnnLyHqsE-vuL0EXLK2Qe
http://wenku.baidu.com/link?url=vsx0jnTPUd2dakwyZgLMfYax74MYK6PaJo6J_9wE_8HIVBfDji_i6h4_5LqVsj14GUm7ErNBYiBRZncSBDfOakqpVnqK7UhpPxZMyvEA8CG
m3ua:
http://wenku.baidu.com/view/9d2d6437ee06eff9aef807ee.html
http://wenku.baidu.com/link?url=0rp4zbTYG55u8GnVC1OGSg9JbO-InJ_O18k9C16ntRvS0SkJLBRUvhllcE1m9jwrdOllh-fl_vryUG1GWO34gMOrsDtV-bdvAq8KeFg8hu3