SIP Resources

SIP Protocols

rfc3261(Obsoletes: 2543)	SIP: Session Initiation Protocol
rfc3665	Session Initiation Protocol (SIP) Basic Call Flow Examples
rfc3428	Session Initiation Protocol (SIP) Extension for Instant Messaging
rfc3312	Integration of Resource Management and Session Initiation Protocol (SIP)
rfc3263(Obsoletes: 2543)	Session Initiation Protocol (SIP): Locating SIP Servers

Relate

SDP

RTP

HTTP

SIP Applicatoins

ekiga 

http://www.ekiga.org/

Ekiga (formely known as GnomeMeeting) is an open source VoIP and video conferencing application for GNOME. Ekiga uses both the H.323 and SIP protocols. It supports many audio and video codecs, and is interoperable with other SIP compliant software and also with Microsoft NetMeeting.

Open Source SIP Libs

Asterisk	Asterisk is a complete PBX in software. It runs on Linux, BSD and MacOSX and provides all of the features you would expect from a PBX and more. Asterisk does voice over IP in many protocols, and can interoperate with almost all standards-based telephony equipment using relatively inexpensive hardware.
Minisip	Minisip is a SIP User Agent ("Internet telephone"). It can be used to make phone calls, instant message and videocalls to your buddies connected to the same SIP network.
oSIP stack (GNU)	oSIP implements the Session Initiation Protocol (published by IETF as RFC 3261). It can provide signalling capabilities for multimedia applications (IP phones, etc.). It provides a fully usable parser for the SIP syntax and implements the "transaction layer" as defined in the draft. It also provides an SDP parser and extra features for the User Agent. It can be used to build both proxy and IP phones.
pjsip	Small footprint SIP stack
Partysip	SIP proxy server
SIPfoundry.org
SIP Express Router (SER) (iptel.org)	SIP Express Router (SER) (iptel.org) ptel.org SIP Express Router" (SER) is a high performance configurable, free server implementing Session Initiation Protocol (SIP). It can act as registrar, proxy server, redirect server and server many roles in SIP networks, including PSTN gateway guard, SMS/Jabber gateway and application server. http://www.iptel.org/ser/ iptel.org Description: iptel.org collects related IETF documents and links to other resources related to SIP. The site offers free SIP accounts. SIP Express Router, free SIP server, is available from iptel.org as well.
sipsak	sipsak is a small command line tool for developers and administrators of Session Initiation Protocol (SIP) applications. It can be used for some simple tests on SIP applications and devices. sipsak is a “swiss army knife” for SIP developers. sipsak is an open source tool available at http://sipp.sourceforge.net/. The home page for the tool is at http://www.sipsak.org/.
SUN	Sun also has a number of open source SIP projects: A Java SIP stack compliant to JSR32 (http://jain-sip.dev.java.net) A proxy server application and a presence/IM user agent that runs on JSR32 (http://jain-sip-presence-proxy.dev.java.net) A soft phone with IM capabilities that runs on JSR32 (http://sip-communicator.dev.java.net)
Vovida	a communications community site dedicated to providing a forum for open source software used in datacom and telecom environments
Yate - Yet Another Telephony Engine	ATE is a telephony engine designed to implement PBX and IVR solutions for small to large scale projects. Yate can be used as a:   VoIP server VoIP client VoIP to PSTN gateway PC2Phone and Phone2PC gateway H.323 gatekeeper H.323 multiple endpoint server H.323<->SIP Proxy SIP session border controller SIP router SIP registration server IAX server and/or client IP Telephony server and/or client Call center server IVR engine Prepaid and/or postpaid cards system
sofia-sip	Sofia-SIP - a RFC3261 compliant SIP User-Agent library.

SIP Tools

Distributed SIP Analyzer

Links

Site

http://www.sipforum.org/

http://www.sipfoundry.org/

  SIPfoundry, the leading Open Source Community dedicated to SIP Solutions and Development
Key efforts at SIPfoundry include:
 

• sipX, The open source SIP PBX for Linux
• repro, the SIP (Proxy) Server
• reSIProcate, a SIP reference stack implementation
• sipXphone, a SIP softphone for Windows and Linux environments
• sipXezPhone and sipXtapi, a comprehensive SIP user agent SDK
• SFTF, the SIP Forum Test Framework

The SIPfoundry Wiki provides additional documentation.

http://www.sipcenter.com/

Vovida http://www.vovida.org/

Welcome to Vovida.org - a communications community site dedicated to providing a forum for open source software used in datacom and telecom environments. While we have predominantly included software to date that we have created, we are looking forward to adding more software from all of you as it is submitted to us for inclusion. If you are working on any type of software for broadband, wideband, or narrowband environments for cable, xDSL, wireless,

Applications
Apps Home
VOCAL
B2BUA
Load Balancer
MPEG4IP
Open G.729(A)
Open AMR
OpenOSP
RGL
SIPRG
SIPSet
SIPTiger
STUN Server
WinRTP

Protocols
Protocols Home
SIP
COPS
GDOI
GSML
MGCP
RTSP
RTP
RADIUS
SRTP
TRIP

Documents

SIP: Creating next-generation telecom applications
Application servers & Media Servers
SIP products