Avaya Client SDK Release 4.20.0.0 was made generally available in December 2021. For information about the features of the release, see the Release Notes available for download below.

• Avaya Client SDK Release 4.20.0.0 Release Notes, Issue 1.0 (PDF)

• Avaya Client SDK for Android, Release 4.20.0.0 (34.42 MB .zip)
• Avaya Client SDK for iOS, Release 4.20.0.0 (29.55 MB .zip)
• Avaya Client SDK for Windows, Release 4.20.0.0 (59.52 MB .zip)
• Avaya Client SDK for macOS, Release 4.20.0.0 (30.38 MB .zip)
• Avaya Client SDK for JavaScript, Release 4.20.0.0 (19.2 MB .zip)
  

• Avaya Client SDK External Application API, v188 (PDF)
• Authorization Helper APIs for External Clients, Avaya Breeze Release 3.8.0.2 (2.57 MB .zip)
• Port Matrix: Avaya Client SDK 4.x Communication Services Package (PDF)
• UC DP Addendum - JavaScript Client SDK 1.0 (PDF)
• UC DP Addendum - Native Client SDK 1.0 (PDF)