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	Billion PBX 2.0 Billion PBX - new generation phone system working in IP-networks using SIP protocol. Billion PBX provides not only voice calls but also a whole range of additional features like call forwarding, voicemail, callback and many others. phone system, PBX, voip, sip, ip-telephony free download trial (12.67 Mb)

	StarTrinity SIP Tester 3.1 SIP tester is a free VoIP load testing tool which enables you to test VoIP network, SIP software or hardware. It is able to simulate thousands of simultaneous incoming and outgoing SIP calls with RTP media, analyze call quality in real time. SIP, VoIP, Performance, Test, Tester free download (3.83 Mb)

	H.323-SIP-IAX VideoPhone for PDA 1.0 H.323-SIP-IAX Softphone with video and audio support for Windows Mobile 2003/5.0/6.0. Supports G.711a/u codec for audio and H.261 codec for video. H.323, h323, sip, iax, video free download trial (9.51 Mb)



	MizuPhone 1.0.2 You will rethink the industry standard VOIP benefits by using this featured SIP softphone. SIP is better than you may think! Stay connected with multiple SIP service providers to maximize your revenue. MizuPhone, Mizu, SoftPhone, VOIP, sip free download trial (32 Mb)

	ABTO Software VoIP SIP SDK for Windows 4.5 ABTO SIP SDK provides a solution to quickly build VoIP softphone that can dial and receive calls on your computer or add VoIP features into your software or web website. VoIP SDK, SIP SDK, VoIP SIP SDK, network interface, sip softphone free download trial (106 Kb)

	Mizu SIP SoftPhone Free 2.1.1 This SIP client software is compatibile with all VoIP service providers. Stay connected with multiple SIP service providers to maximize your revenue. softphone, soft phone, sip softphone, voip phone software, voip softphone free download (7.86 Mb)



	Mizu SoftPhone 1.2.8 You will rethink the industry standard VOIP benefits by using this featured SIP softphone. SIP is better than you may think! Stay connected with multiple SIP service providers to maximize your revenue. softphone, VOIP, sip free download (32 Mb)

	VaxVoIP SIP Server SDK 5.2.0 VaxVoIP SIP Server SDK is a new, flexible approach that combines several advanced features, enabling users to create their own VoIP Server and IP PBX systems SIP Server, SIP, VoIP, VoIP Server, IP-Telephony protocol free download trial (29.71 Mb)

	SiSky Enterprise Edition 2.6.0.1 SiSky-Connect SIP to Skype Network Solution SIP to Skype, Skype to SIP, Skype Gateway, SIP Gateway free download trial (29.35 Mb)

	Mizu VoIP SoftPhone 3.2.6 MizuPhone is a professional VoIP softphone for Windows which can be used with any softswitch or PBX using the industry standard SIP and RTP protocols. softphone, VoIP softphone, windows softphone, voip softphone for windows, voip phone free download (4.28 Mb)