Open Source VOIP applications, both clients and servers (开源sip server & sip client 和开发库)
SIPProxiesSBOSIPProxyBypassAlltypesofInternetFirewallJAIN-SIPProxyMini-SIP-ProxyAverytinyperlPOEbasedSIPproxyMjServercross-platformSIPproxy/registrar/redirect,writteninjava,basedonMjSipstackMySIPSwitc