SIPsocial is a SIP (Session Initiation Protocol) registrar and outbound proxy server.

SIPsocial enables SIP phone services over the Internet securely by means of NAT / firewall devices and provides SIP phone users with privacy protection using PKI (Public Key Infrastructure).

SIPsocial is free. SIP phone users can download and install SIPsocial to:

1. use SIPsocial registrar service to register SIP phones and to create a SIP network of phones behind a NAT / firewall,

2. use SIPsocial outbound proxy service, from behind a NAT / firewall, to validate PKI public keys and to establish mutual inclusive connections with other SIP networks of phones,

3. build a secure and privacy protected SIP VoIP network.

SIPsocial can be downloaded at the Web site: http://SIPsocial.net