Wesley Explains: Smarter AI in 3CX Update 9

If you’ve ever configured an AI Receptionist in 3CX, you know what it felt like. Lots of tabs, settings scattered across different screens, and then just hoping you hadn’t missed anything.

Update 9 fixes a lot of that. The Call Routing tab now has clearer labels. “Route by Name” works more accurately when transferring to colleagues. And “Route by Topic” replaces the vague old terminology, making it easier to route calls to the right person or department based on what the caller actually needs.

The biggest difference is the new Options tab. All behaviour settings in one place. How should the AI handle an aggressive or frustrated caller? Do you only want calls transferred when a colleague is genuinely available? You set that up in three clicks now, instead of hunting through four different screens.

Fewer failed transfers. Better first-call resolution. I think that matters.

I already knew the AI Personal Assistant as a useful buffer between the outside world and your colleagues. But it had its limitations. You couldn’t really control what happened to a call once the PA had intercepted it.

That’s changed now. You choose how you receive a notification: via chat, via email, or not at all. Calls can go straight to voicemail, or you can give the AI permission to transfer automatically when appropriate.

The best new addition: urgent calls. The AI recognises time-critical situations based on the caller’s intent and keywords you define yourself. When something urgent is detected, the PA skips the normal screening and transfers the call straight through. Useful for organisations where speed sometimes genuinely makes the difference.

Previously you could toggle the spam filter on and off. Sometimes it was on, sometimes off, and nobody remembered why. In Update 9, it’s always active as a core part of AI Agents.

You decide what counts as spam and what happens next: block it, redirect it, or end the call immediately. The filter runs in the background. Your team won’t notice it. Only the calls that actually matter get through.

This sounds more technical than it is. Every AI Agent runs on a “prompt”: a set of instructions that tells the AI how to behave. The bigger the prompt, the more it costs and the less room the AI has to focus on the actual conversation.

3CX has completely rewritten the default prompts. The result: they’re about 80% more compact. Unnecessary instructions removed, everything tighter and more direct. The AI can now focus better on what’s being said, instead of burning processing capacity on a wall of text full of redundant rules.

Using custom prompts? Then it’s definitely worth putting the new defaults next to your own version. Chances are there’s room to make yours more compact and more effective too.

Until now, you could choose between Google and OpenAI for transcription. That works fine, but the options were limited. Update 9 adds xAI Grok as a third option, for transcribing call recordings, generating summaries, and sentiment analysis. In the PRO edition, it also covers voicemail transcription.

Is it better than Google or OpenAI? That depends on your situation. But having more choice is never a bad thing. Especially when it comes at a sharper price point.

Names aren’t always pronounced the way they’re spelled. That’s always been a weak spot in voice-driven searches. A caller asks for “Bjorn Borg”, but the AI heard “Bjorn Borch”? Previously, that led to a failed search.

The improved fuzzy search in Update 9 handles variations in pronunciation and alternative spellings much better. Sounds minor. In practice, it saves a lot of frustration for both the caller and the person on the other end.

Update 9 isn’t a headline-grabbing release with flashy features to talk about for a day. It’s something better: an update that takes things that already worked and makes them genuinely good. Leaner prompts, cleaner configuration, smarter screening, a spam filter you don’t have to think about.

That’s the kind of work you only appreciate once you’re actually using it. And then you wonder how it ever worked any other way.

Questions about what Update 9 means for your setup? Or wondering whether your current 3CX environment is ready for the AI features? We’re happy to think it through with you.

Read the full blog about the update from 3CX here.