自己团队用VC开发基于MYSQL数据库的连H323的openGK的实时身份验证，及IP地址验证的工程-their team-based VC MYSQL database links H323 openGK the real-time identification and validation of IP addresses works

sip服务器原代码,要求在linux或者unix下安装,可以用于建立自己的voip系统,基于sip协议-OpenSIPS brings: robust and performant SIP (RFC3261) Registrar server, Location server, Proxy server and Redirect server small footprint- the binary file is small size, functionality can be stri