VoIP SIP SDK

Update build: VOIP SIP SDK for Android

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Update build: VOIP SIP SDK for Android

Change log:

  • - fixed missing local audio issue
  • - fixed reply back mechanism, use proper transport in dialogs and handles properly DNS SRV configuration
  • - removed requirement for SCHEDULE_EXACT_ALARM permission, now optional
  • - removed requirement for BLUETOOTH_CONNECT permission, now optional
  • - fixed openSL audio driver usage by default
  • - stability fixes

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Big Update VOIP SIP SDK for Flutter

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Change log:

  • - Updated iOS SDK to 20250805
  • - Updated Android SDK to 20250822
  • - Changed Flutter min version to 3.0.0
  • - Removed deprecated FlutterApplication class on Android
  • - Set AbtoApplication as the default application on Android
  • - Added 16k alignment on Android
  • - Minimum supported version: Android 5.0
  • - Transitioned to new C++ library libc++_shared.so instead of libstlport_shared.so
  • - Updated OpenSSL to 1.1.1w (Android & iOS)
  • - Updated srtplib to 2.5.0 (Android)
  • - Updated libSRTP to 2.5.0 (iOS)
  • - Android API target level set to 35
  • - Internal engine improvements: fixed deadlocks, memory leaks, flow inconsistencies
  • - Updated Android sample projects to target API level 35
  • - Added support for TLS 1.3 on iOS (disabled by default)
  • - Added option on iOS to change secure transport encryption type via socketEncryptionOptions
  • - Added option in iOS updateCall method to use SIP UPDATE instead of re-INVITE
  • - Partial rebuild on iOS using latest Xcode for improved compatibility
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Hotfix Release: VOIP SIP SDK for Android

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Hot Release Android SDK change log:

  • - fixed video calls(regression in release 2025.07.29)
  • - added support for TLS 1.3, new methods setSocketEncryption and getSocketEncryption, and deprecate 2 methods getTLSMethod and setTLSMethod
  • - added functionality for client side verification, new methods setTLSVerifyClient, setTLSClientCert and setTLSClientPrivKey


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Update VOIP SIP SDK for Android

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Android SDK change log:

  • - 16k alignment
  • - minimum supported Android 5.0
  • - transition to new C++ library libc++_shared.so instead of libstlport_shared.so
  • - use newer OpenSSL 1.1.1w
  • - updated srtplib to 2.5.0
  • - android API target level set to 35
  • - internal engine update to target deadlocks, memory leaks and flow incinsistencies
  • - Updated sample projects to target API level 35


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Update VOIP SIP SDK for iOS

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Try new features by downloading our latest update of VOIP SIP SDK for iOS.

iOS changelog:

  • updated OpenSSL to 1.1.1w
  • updated libSRTP to 2.5.0
  • added support for TLS 1.3, disabled by default
  • added option to change secure transport encryption type via socketEncryptionOptions option
  • added option in method updateCall to use SIP UPDATE instead of re-INVITE
  • added Objective-C sample with background method execution using GDC
  • added script to generate dynamic SDK XCFramework
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Update VOIP SIP SDK for Android

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Android SDK change log:

  • - changed username to SIP URI in receiver argument of onTextMessageReceived callback
  • - disabled code which removes auto dial DTMF suffix
  • - SDK target changed to API level 34
  • - added RX and TX byte counter to AbtoPhoneMediaQuality
  • - added method to specify custom REGISTER headers
  • - fixed H264 full HD (1920x1080) video capture
  • - added POST_NOTIFICATIONS permission to example apps
  • - added FOREGROUND_SERVICE_PHONE_CALL permission and marked service with phoneCall foreground type in example apps
  • - updated Java example apps build files to support Android Studios that capable to build Android 14 (API level 34) apps
  • - updated Kotlin example apps build files to support Android Studios that capable to build Android 14 (API level 34) apps


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