Uplink Skype to Sip Adapter
Uplink connects SIP protocol VoIP calls to the proprietary Skype phone network. It works in both directions. The SIP protocol has become the industry standard for VoIP. Thousands of telephone companies, IP phone manufacturers and virtual IP based PBX systems use this protocol to connect calls. ... ~ Can be used to make SkypeOut calls from a SIP device or SIP PBx. ... ~ To use Sip Based Voicemail Systems or Sip Based IVR Systems (for example information lines) on Skype calls. ... ~ Can receive SkypeIn calls and direct them to your SIP extension.
http://www.nch.com.au/skypetosip/uplinksetup.exe - 238Kb - Download - Screenshot

Telepati SIP Phone Freeware
Telepati SIP Phone Freeware allows you to make PC-PC phone-phone calls over the Internet. Developed using Research Labs VOIP SIP Phone SDK, this free soft phone brings SIP protocol support for ActiveX. With this phone once you set the gatekeeper proxy with the username and password from your... Tested and works with 75% of the providers. ... Though this implementation might turn out fairly complex, our VOIP Implementation Team at Research-Lab will guide you remotely for the same. ... Now VOIP open source projects have made it easier to implement a customized VOIP Solution eliminating...
http://www.bandwidthsaver.com/downloads/telepati.zip - 1Mb - Download - Screenshot

Express Talk VoIP Softphone
Express Talk is software that works like a telephone to let you make calls from your PC. With Express Talk you can call anyone on the internet who has installed Express Talk (or any other SIP voip softphone). Calls are free. You can also call ordinary telephone numbers anywhere in the world if... ~ Uses the standard SIP protocol so it can link to a broad range of telephone gateways, SIP system or other internet phone software. ... It uses the SIP protocol and is compatible with most major VoIP SIP service providers.
http://www.audiochannel.net/software/talk.zip - 430Kb - Download - Screenshot

VaxVoIP SIP activeX SDK
VaxVoIP SIP SDK provides tools and components to quickly add SIP (Session Initiation Protocol) based IP-Telephony make and receive phone calls feature in your web pages and software applications. It accelerates the development of SIP based soft phone with your own GUI (graphical user interface)... - NOISE CANCELLATION OR SUPPRESSION: VaxVoIP SIP SDK offers advanced Noise Cancellation technology that allows significant suppression of any background noise and provides high quality of output speech.
http://www.vaxvoip.com/vaxvoipsip/VaxSIPUserAgentSDK.zip - 2Mb - Download - Screenshot

SIP Phone DLL
SIP Phone DLL allows to make PC-PC, PC-phone, or phone-phone calls or create Instant Messaging (IM) sessions over the Internet VOIP SIP Phone SDK brings protocol support for ActiveX. With this SDK one can create a simple program to connect and start speaking with anyone with a direct IP Address... VOIP SIP DLL Soft Phone SDK brings SIP protocol support for ActiveX. ... Though this implementation might turn out fairly complex, to tackle this our VOIP Implementation Team at Research-Lab will guide you remotely for the same.
http://www.ipchip.com/downloads/sphone01.zip - 3Mb - Download - Screenshot

3CX VOIP Phone for Windows
Free VOIP / SIP phone. Use your PC as a phone. Works with any SIP / VOIP provider/ phone service. Use instead of the soft phone provided by your VOIP provider which locks you into their VOIP phone service. Easy to use interface includes dial pad and buttons to transfer or forward a call. ... Features include * Integrated phone book (allows you to assign caller ID to a name) * Supports several SIP profiles * Displays caller ID * Individual ring tones (per caller) * Drag & drop handling * Call log * Incoming calls: identify, accept, reject or ignore * Record phone calls * Multiple calls...
http://www.3cx.com/VOIP/3CXPhone.exe - 1Mb - Download - Screenshot

Quorum Call Conference Software
Quorum is software which runs as a phone conference server on any Windows PC. Callers dial into the server to join telephone conferences. Callers can connect to a conference call using either standard or VoIP lines on external telephone numbers or through an office phone system. ... ~ Can connect via VoIP using the international standard SIP protocol. ... ~ Can connect to one Skype Number (so a Skype user can connect) using the Uplink Skype to SIP Adapter. ... ~ VoIP calls can be made using free VoIP SIP Service Providers saving call costs if they are an issue.
http://www.audiochannel.net/software/quorum.zip - 947Kb - Download - Screenshot

Embedded VOIP SIP Developers Kit
Embedded Windows CE VOIP Developers Kit is your embedded telephony solution for developing software/hardware to enable device to device phone calls using SIP/H323 phone right at the electronics level. The design is based on Hybrid Combination of RFC SIP Protocol and Windows RTC and is today... With a memory overhead of 3 MB - the telephony engine very well fits the needs of engineers looking for porting highly advanced SIP or H323 PROTOCOL to the embedded world. ... e. ... for Registered Users] Save a conversation to a wave file [i.
http://www.ipchip.com/downloads/wincevoipsip01.zip - 2Mb - Download - Screenshot

Axon Virtual PBx System
Axon is a virtual PBX designed to manage calls within a business or call center environment. Any business, whether small or large, can now implement a scalable PBX solution with an existing PC which connects to phone lines and extensions using VoIP technology. ... ~ Uses the open SIP standard for signalling (RFC 3261) so it works with the broad range of SIP compatible phones and other devices. ... ~ Works with USB phones plugged into your computer. ... the Express Talk Softphone) where you make calls through your computer.
http://www.audiochannel.net/software/pbx.zip - 323Kb - Download - Screenshot

Best_phone_2006
Best_phone_2006 is a SIP based VoIP soft phone, which integrates robust technologies such as SIP stack by NIST (National Institute of Standards and Technology) and Java, JMF from Sun Microsystems. Best_phone_2006 is a free downloadable soft phone which enables you to make calls from pc to pc, pc... You can also listen to your favorite music through an MP3 player embedded in Best_phone_2006. ... s Best_phone_2006, mobile, home or office number with a single click even while chatting. ... You can add your favorite songs to your Play List and listen to them even while you chat with your buddies.
http://www.globe7.com/downloadnow.php?refcode=AX12640 - 16Mb - Download - Screenshot