Stability Updates VoIP SIP SDK for Windows

Posted on September 16, 2026

Try new features by downloading our latest update for Windows.

Changes list:

Improved SDK stability and reliability
Internal performance optimizations
Maintenance updates for smoother SDK operation
General improvements to ensure continued compatibility and reliable performance

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When Skype Moves On, Your Business Moves Forward?

Posted on May 1, 2025May 1, 2025

Many teams have relied on services like Skype for years — it was easy, familiar, and did the job. But when tools change, shut down, or become less reliable, businesses face a serious question: What now? Unlike personal messaging apps, … READ MORE

Update VOIP SIP SDK for Windows

Posted on October 24, 2024November 6, 2024

Try new features by downloading our latest update for Windows.

Changes list:

added ICE support to x64 version of SDK
fixed crash on handling multiple call redirects
fixed crash on handling hold when call not answered yet
fixed playing ringtone on receiving/ending multiple calls
added ability to use random RTP port numbers (set phone.Config.RtpStartPort=0)

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Update VoIP SIP SDK for Windows

Posted on October 31, 2020September 15, 2021

Please download our latest update of VoIP SIP SDK for Windows: Change log: - Added ability to set optional SRTP 'phone.Config.EncryptedCallEnabled = EncryptedCallType::eSdesSrtpOptional' - Fixed possible crash on generating event 'OnReceivedRequestUpdate' - Added ability to print number of sent/received audio RTP packets in logs - Added abiltiy to set range in setting 'phoneCfg.AllowedRemoteIP = "109.68.96.0/8"; - Fixed potential crash when SDK raised OnRegisterer and app uses dll inetrface Continue reading →

Update VoIP SIP SDK for Windows

Posted on July 31, 2020

Please download our latest update of VoIP SIP SDK for Windows: Change log: – Added new methods RetrieveCall(int lineId), HoldCall(int lineId) – Fixed C# wrapper – set same class names name as ActiveX interface has – Added ability to set noise reduction … READ MORE

Update VoIP SIP SDK for Windows

Posted on April 28, 2020April 30, 2020

Please download our latest update of VoIP SIP SDK for Windows: Change log: – Added new event ‘OnRegistered2’, Provides more precise control on registration status of each account; – Fixed possible freezing in method ‘Shutdown’; – Optimized mediasubssytem’s log ouput, … READ MORE

Update VoIP SIP SDK for Windows

Posted on December 30, 2019January 2, 2020

Please download our latest update of VoIP SIP SDK for Windows: Change log: – Fixed issue with empty list of audio devices on WinXP; – Fixed case with ending the call, which was transferred, but transfer didn’t finish; – Added ability … READ MORE

Windows VOIP SIP SDK – managed or native dll?

Posted on December 12, 2019July 28, 2025

We often receive the following questions from our customers regarding ABTO Software’s VoIP SIP SDK for Windows: Is it implemented as managed or native dll? How to integrate SDK into the user’s own application? How to deploy an SDK-based solution to … READ MORE

Update VoIP SIP SDK for Windows

Posted on September 30, 2019September 30, 2019

Download an important update of VoIP SIP SDK for Windows: https://voipsipsdk.com/products/voip-sip-sdk/download – Added ability to play HTTP streams; – Fixed bug with handling SIP port number when few SDK instances started; – Added ability to use a few audio devices at the … READ MORE

Update VoIP SIP SDK for Windows

Posted on June 30, 2019July 1, 2019

Download an important update of VoIP SIP SDK for Windows: https://voipsipsdk.com/products/voip-sip-sdk/download Change log: – Added ability to receive video frames with a resolution larger than own; – Redesigned how SDK handles option ‘LocalAudioEnabled’ Now when app started without audio devices … READ MORE