Hello, new to the FreePBX/Asterisk world. Considering replacing our Cisco Enterprise and Genesys Pureconnect platforms with freePBX. I have not been able to find any guides on how to support large endpoint counts (6k) and multiple servers connected, or clustered, together. Is there such a design and where might i find a guide to do so?
Welcome!
You can link PBXstogether via IAX2 trunks
FreePBX: How to set up an IAX2 trunk in FreePBX | MangoLassi
Asterisk: Connecting Two Asterisk Boxes Together via IAX
Or you can look at a SIP session manager and use a cluster of Asterisk servers to complete your voice transactions:
https://dsiprouter.org/
https://opensips.org/
Lastly you may want to explore pure Asterisk. I’m sure there are others on the forums with larger deployments.
I will tell you from experience, at least FreePBX queues does not scale to large numbers well. But on the Asterisk side there are many examples of success.
Also, a good resource for when you are at the stage of migrating: https://www.youtube.com/watch?v=MCh6fGwAKsc&t=6296s
Please don’t use IAX2 to link PBXes together. You don’t gain anything and lose things. Not only that IAX2 is community supported and it doesn’t get a lot of support or real feature updates.
Just use chan_pjsip.
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IAX has value in my opinion, but only that. I do appreciate the single port use that comes with IAX. That being said, its not harder to do SIP, just different.
If you want to cluster a couple of PBXes together and share hints and other stuff across multiple PBXes. PJSIP Trunks is the way to go.
See example: Remote BLF's using PJSIP - FreePBX Documentation - Documentation
Also:
Exchanging Device and Mailbox State Using PJSIP - Asterisk Project - Asterisk Project Wiki
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