Question 1

How to set up push notifications with Flexisip?

Accepted Answer

Flexisip includes a built-in push notification service for mobile apps; enable it in the configuration file (flexisip.conf) by configuring the push module with credentials for APNS or FCM, and ensure the proxy server is properly linked.

Question 2

Flexisip vs Asterisk for a SIP server?

Accepted Answer

Flexisip is more modular and embeddable, written in C++ for scalability, while Asterisk offers a broader telephony feature set with a larger ecosystem but can be heavier and less suitable for embedded use. Choose Flexisip for core SIP functionalities with flexibility.

Question 3

Does Flexisip support video conferencing?

Accepted Answer

Yes, the conference server module enables group voice and video calls, but it requires proper configuration for media handling and codec support, and may need additional tuning for large-scale deployments.

Question 4

How to deploy Flexisip using Docker?

Accepted Answer

Build a Docker image from sources with 'docker build -t flexisip --build-arg njobs=<n> -f docker/flex-from-src .', then run it with volume mounts for configuration files and ensure dependencies like Redis are set up for clustering.

Question 5

What are the licensing costs for commercial use of Flexisip?

Accepted Answer

Flexisip is free under AGPLv3, but for proprietary closed-source projects, you must contact Belledonne Communications for a paid license, with costs varying based on deployment scale and support requirements.

Question 6

How to scale Flexisip for high availability?

Accepted Answer

Use Redis for shared state between instances in a cluster, as indicated in dependencies, and configure multiple proxy servers with load balancing; the documentation covers clustering setups for registrar and presence servers.

Flexisip

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