同义词
1)VTNS Virtual Telecommunications Network Service,虚拟电信网络服务2)virtual networking service,虚拟网络服务3)VNS Virtual Network Server,虚拟网络服务器4)VTNS Virtual Telephone Network Service,虚拟电话网服务5)virtual value-added service,网络虚拟增值服务6)virtual private network server,虚拟专用网络服务器
