Need working Kamailio 5.1 SIP/RTP Proxy configuration.
The server will be a centos and will have 2 NIC ( 1 on DMZ and 1 on LAN ) and SIP proxy must forward all SIP messages (including REGISTER, SUBSCRIBE, NOTIFY, OPTIONS, etc.) and also pass all RTP traffic through RTPENGINE to a internal Asterisk/Freepbx with TLS support.
It is also important to have capabilitiy to load-balance to multiple asterisk/freepbx servers
10 freelancers are bidding on average €563 for this job
I have 5+ years of experience in development voip solution with asterisk kamailio sip rtp srtp tls ssl. i can give you best quality product in lowest price and with lowest price.