As of September 14th, 2021, SMS service for 16.1R2 software will NOT work for customers. Other releases are NOT impacted. Since 16.1R2 uses jdk 7, it is impacted.
And there is no plan to provide fix. It is recommended to move to 20.x, or 21.1 or 21.2. Since 16.1R2 is EOL.
Here are timeline from Plivo:
Below are the timelines for transition:
- August 20th, 2021: Legacy Plivo API endpoint https://api-legacy.plivo.com provided for customer’s applications not compatible with SNI.
- September 14th, 2021: https://api.plivo.com mandatory support for SNI and a more secure platform.