iptel.org is the home of the open-source projects:
iptel.org provides high-value information and resources on SIP-based IP telephony and IP telecommunication.
iptel.org is the home of the free SIP/IP Telephony service iptel.org.. .
April 24th: A new book on SIP security has been published by Wiley. Visit sipsecurity.org site for more details.
Apr 17th: We are happy to announce the SIP Router project, a joint effort to create a shared code base for various SER related projects.
