More information about other SIPsocial apps can be found at SIPbiz.net.
In a SIP Network, the SIP phones register with SIPsocial to receive SIP VoIP calls. When the call arrives, SIPsocial sends it to the SIP phone using the IP address that was collected through the registration process.
SIPsocial makes possible for a SIP Network to connect, through NAT / firewall, to a network of SIP Networks called SIP Social Network as shown in the following drawing.
SIP Network is constructed using the technologies listed below.
SIP Network Technologies