ABTO Software VoIP SIP SDK for Windows 4.7

Software information
Windows 7/Vista/XP/2000/Server
File size:
106 Kb
Date added:
March 17, 2014
Product page:
Description from the Publisher

VoIP SIP SDK provides capabilities to build a custom softphone  with voice calls or add VoIP features to your software.


Protocols Support

  • SIP (Session Initiation Protocol)
  • RTP (Real-time Transport Protocol)
  • SDP (Session Description Protocol)
  • TCP (Transmission Control Protocol) /UDP (User Datagram Protocol)
  • STUN (Session Traversal Utilities for NAT)
  • ICE (Interactive Connectivity Establishment)

Development Features

  • ActiveX, COM, and plain dll files
  • NAT (Network Address Translation)  support
  • Encryption on the basis of sRTP, DLS, and DTLS
  • DTMF (Dual Tone Multi Frequency) support
  • SIP Authentication
  • Codecs management
  • Basic 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

  • All versions of Windows OS, including Windows 8
  • Support of all kinds of Internet connections
  • SIP Registrar support (compatibility with most of SIP servers including Asterisk)
  • Works under firewall
  • Multiple sip accounts registration
  • Multiline support
  • Multi-party voice conference
  • Video call support
  • 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 (Auto gain controller) support
    • Adaptive silence detection
    • Adaptive jitter buffer
  • Software volume control (including Mute Sound)
  • Playing file into conversation
  • Recording conversation into file
  • Redirection of calls to other phone lines
  • Call history and address book ready

Available Codecs

  • 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
Users reviews & testimonials

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