Quick facts about ABTO Software VoIP Video SIP SDK for Windows: License Details No yearly/monthly fee No limitation for number of users, channels, or products Protocols Support SIP, RTP, SDP, TCP/UDP, STUN, ICE Development Features ActiveX, COM, and plain dll files NAT support Encryption on the basis of sRTP, DLS, DTLS, and zRTP DTMF support SIP Authentication Codecs management Samples (C#, C++, VB.NET, VB 6.0, and Delphi) Custom samples (multiple SIP accounts, IVR, presence, and voice mail) Log file on/off setting End User Features Video call support (also check Video Conference SIP SDK) All versions of Windows OS, including Windows 7 and 8 SIP Registrar/server support Works through VPN to avoid VoIP blocking Works under firewall Multiple sip accounts registration Multiline support (up to 8 for standard version and up to 64 lines for multiline version) Multi-party voice conference IM interface Selecting of media input and output devices Custom ringtone support Configuration saving and loading Conversation Specific Features Calls operations: Hold/Retrieve Call, Forward Call (Blind Call Transfer), Transfer Call (Attended Transfer) Noise reduction (supression): AGC support, adaptive silence detection, adaptive jitter buffer Software volume control (including Mute Sound) Playing wav/mp3 file into conversation Audio/video recording conversation into file Redirection of calls to other phone lines Call history and address book ready Available Codecs H.263 H.264 G.711 (ALaw, muLaw) G.726 (16k 24k 32k 40k) G.729A G.723 iLBC LPC-10 Speex (Narrow, Wide) L16 RFC4733 DTMF tones GSM
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