SIP@Home was developed to be a SIP Proxy server for Windows OS. It allows make calls between SIP devices, such as mobile phone, PC, PSTN. SIP@Home works as traditional SIP proxy server, when through proxy goes only SIP traffic, or as full proxy, when all traffic includes voice data goes through SIP@Home.
When SIP@Home works in full proxy mode it easy to configure home router to forward voice traffic through NAT, because it is needed to forward only 1 port and you don’t need to configure each SIP device, only proxy.
Limitations:
· In free version SIP@Home supports only 2 simultaneously logins and don’t allows to use security. So, any user can register on proxy. After registration you can set logins and passwords for users and it supports up to 10 user registrations.