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Freepbx
This module provides a facility to install bug fixes to the framework code that is not otherwise housed in a module (by FreePBX)
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
One possibility is using https://www.freepbx.org/ with a compatible VOIP phone and subscription. It will run in a docker. Disclaimer: I've never used it.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.