ABTO Software's VoIP SIP SDK for Windows Short Description:
Highly customizable VoIP SDK to accelerate development of SIP applications
ABTO Software's VoIP SIP SDK for Windows Long Description:
VoIP SIP SDK is a sip soft phone solution to quickly build voip softphone to dial and receive phone calls or add voip chat features in your software application.
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