SylkServer

h1. SIP/XMPP Gateway

The goal of this task is to implement a bidirectional signaling and media gateway for Presence, Instant Messaging, Multiparty IM, Audio, and File Transfer between SIP and XMPP protocols. This research and development project is part of the WormHole Project sponsored by "NLNet and AG Projects":http://nlnet.nl/project/xmpp-sip/.

!http://sylkserver.com/images/sylk-server-diagram.png!

h2. Deployment Scenario

By pointing the correspondent DNS records for the SIP and XMPP services to the address of the gateway, any packet sent to or connection established to the gateway by one of the protocols is transparently translated into the other.

h2. Specifications and Standards

h3. SIP Signaling and related media planes (RTP and MSRP)

* SIP (RFC3261) and related RFCs for SDP, ICE, RTP (too many to mention)

* MSRP Protocol http://tools.ietf.org/html/rfc4975

* MSRP Relay extension http://tools.ietf.org/html/rfc4976

* Multi-party Chat Using MSRP http://tools.ietf.org/html/draft-ietf-simple-chat-14 

* Alternative Connection Model for MSRP http://tools.ietf.org/html/rfc6135

h3. XMPP

* XMPP core (RFC 6120) http://xmpp.org/rfcs/rfc6120.html

* XMPP extensions http://xmpp.org/xmpp-protocols/xmpp-extensions

* Instant Messaging and Presence http://xmpp.org/rfcs/rfc6121.html

* Multi-User Chat http://xmpp.org/extensions/xep-0045.html

* File Transfers http://xmpp.org/extensions/xep-0096.html

* Audio and Video Jingle http://xmpp.org/extensions/xep-0166.html

* Audio and Video  Jingle RTP http://xmpp.org/extensions/xep-0167.html

* Audio and Video Jingle ICE (UDP) http://xmpp.org/extensions/xep-0176.html

* Delivering Conference Information to Jingle Participants http://xmpp.org/extensions/xep-0298.html

h2. Protocol Translation Specifications

* "XMPP - SIP Presence":http://xmpp.org/internet-drafts/draft-saintandre-sip-xmpp-presence-02.html

* "XMPP - SIP Message":http://xmpp.org/internet-drafts/draft-saintandre-sip-xmpp-im-01.html

* "XMPP - MSRP Chat":http://xmpp.org/internet-drafts/draft-saintandre-sip-xmpp-chat-03.html

* "XMPP - MSRP Group Chat":http://xmpp.org/internet-drafts/draft-saintandre-sip-xmpp-groupchat-01.html

h2. Progress

The software is in active development and progress announcements are  made on "SIP beyond VoIP":http://lists.ag-projects.com/mailman/listinfo/sipbeyondvoip mailing list 

* "Software Library Analysis":http://sylkserver.ag-projects.com/projects/sylkserver/wiki/DesginXMPP_analysis - Completed

* "Gateway Design":http://sylkserver.ag-projects.com/projects/sylkserver/wiki/DesginXMPP_arch - Completed

* "SIP-XMPP Chat":http://sylkserver.ag-projects.com/projects/sylkserver/wiki/DesginXMPP_im - Completed

* "SIP-XMPP Presence":http://sylkserver.ag-projects.com/projects/sylkserver/wiki/DesginXMPP_presence - Completed

* "SIP-XMPP Multiparty Chat":http://sylkserver.ag-projects.com/projects/sylkserver/wiki/DesginXMPP_conference - Completed

* "SIP-XMPP Jingle Audio":http://sylkserver.ag-projects.com/projects/sylkserver/wiki/DesginXMPP_jingle - Roadmap

* "SIP-XMPP File Transfer ":http://sylkserver.ag-projects.com/projects/sylkserver/wiki/DesginXMPP_ft - Roadmap

The completed items are operational on * "SIP2SIP":http://sip2sip.info which supports Chat and Presence to gmail.com an jabber.org domains