General Advice: moving from 3CX

edwindrood

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Dec 15, 2025
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I am looking to move away from 3CX to FusionPBX on a VPS like OVH. I have seen lots of great tutorials.
What I am having troubles with is understanding best practices for desk-phones in the office. I have mostly Polycom VVX 410 (these are still cheap on ebay).
Of course, 3CX always uses a proprietary SBC in each remote office.

Although the vvx 410 version 5.9.x is supposed to have STUN support, I do not see it. Plus I see many folks here advising to not use STUN at all. If all remote offices have a static outside IP address, I see there may be options for that, but I would prefer the ability to support a dynamic ISP.

I see that I could possibly set up an equivalent proxy as mentioned here:

Even better, I see from the docs that I could possibly both provision and set up SIP routing like this:

I would prefer to not toss all my Polycom vvx 410 phones into the landfill.
I would prefer a light-weight SBC (or SIP Proxy) in each remote office if I am unable to connect another way.

I do not want to re-invent the wheel. I am sure that there are many folks who have already addressed this.

I am not ready to dip my toe into multi-tenant stuff yet. I am just looking at supporting a few phones in a few locations.

So please let me know: Is having a light-weight Proxy in each remote location the best way to go?