sip sdk

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Features:

Multiple lines explicit selection! Conferencing! Dynamically loadable codecs SIP Proxy authentication Multi-party voice conference Registrar support Play wav files into conversation Record conversation into file Hold/Retrieve call Forward Call (Blind Call Transfer) Transfer Call (Attended Transfer) Mute Sound VPN support Authorization Id Noise reduction Auto gain Jitter buffer parameters Samples on Delphi, C#, VB, VB.NET, C++ 2005, C++ 6.0, HTML (SIP ActiveX) Windowless samples on C++ and .NET DTMF Adaptive silence detection Adaptive jitter buffer STUN support Comes as ActiveX control and as DLL only version .Net COM wrapper version Retrieving external IP addres from STUN server IM interface Codec disabling Playback of different formats of WAV files Software volume control Caller-id and user-agent customization SDP updates Fax support AuthID handling IPv4/v6 support Additional DNS servers Manual network interface selection Friendly to NAT and other firewalls Narrowband, wideband voice codecs Packet Loss Concealment Network interface selection Bluetooth implementation Callcenter manager listening usecase implemented Additional independent full featured RTP SDK Royalty free licensing No Yearly/Monthly fee Free product updates/bug fixes/hot patches

Available codecs: G.711-ALaw G.711-uLaw G.726 (16k 24k 32k 40k) G.729 G.729A iLBC LPC-10 Speex (Narrow, Wide) g723.1

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