ABTO RTP SDK provides a powerful and highly customizable solution to quickly build application with ability to send/receive sound by RTP protocol.

* Main features: Ability to create multiple independent channels
* Ability to select different sending codec for each channel (G711, G726, G729, GSM, SPEEX)
* Recording in mp3 format
* Playing wav, mp3 files
* Voice detection feature

• ABTO SIP SDK 3.0.12
  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. Our...

• Free Premium Softphone Software 2.0
  Premium Features: 4 Lines,Call Recording,Hold / Unhold ,Transfer (Xfer),DND (Do not Disturb),Redial,Mute,Auto accept call,NAT/Firewall support STUN server Support ,ICE Support,Debug Mode (SIP message log),Codec Supported,G729, G711 u, G711 a, G722, GSM, iLbc, Speex/ 8000, Speex/16000 , Speex / 32000,Codec selection and Codec Quality Control (Bandwidth control),Silence Suppression,Echo Cancellation Uses NEW RFC 3261 compliant stack,DTMF (RFC 2833),RFC 3951: Internet Low Bit Rate Codec (iLBC),Proxy Settings,Registration Timeout Acoustic Echo Cancellation,Packet concealing,Packet Lost Concealment (PLC),Comfort Noise Generator (CNG),Resampling,Balance Display Credit time display

• VoIP SIP Client SDK 1.3
  VoIP SIP Client SDK - A powerful and highly versatile VoIP SDK

• SIP SDK 3.0
  SIP SDK - A powerful and highly versatile VoIP SDK

• Softphone SDK, SIP SDK, VOIP SDK, Softphone, IVR SDK, IMS SDK 1.3
  Softphone SDK, SIP SDK, VOIP SDK, Softphone, IVR SDK, IMS SDK

• VoIP SIP SDK for .NET and ActiveX 3.0
  VoIP SIP SDK - A powerful and highly versatile VoIP SDK

• VoIP SIP SDK with DLL, ActiveX and .NET 2.5.2
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• VoIP H.323 SDK for .NET and ActiveX 1.0
  VoIP H