yum groupinstall "Development Tools"
yum install iptables-devel
yum install libgpg-error-devel
yum install python-devel
yum install libnfnetlink-devel
yum install libnetfilter_conntrack-devel
yum install libgcrypt-devel
yum install python-zope-interface
python-cjson
./setup.py build
./setup.py install
python-application
./setup.py build
./setup.py install
python-gnutls
./setup.py build
./setup.py install
Install the Twisted Python package
./setup.py build
出错：
centos ImportError: Twisted requires zope.interface 3.6.0 or later
自己去官网下了一个
解压，进入目录
python setup.py install
然后再回到Twisted 目录
./setup.py build
./setup.py install
接着步骤走 没出错。
参考资料：
http://deepfuture.iteye.com/blog/1190505
（http://kb.smartvox.co.uk/opensips/install-mediaproxy-centos-6/）