r/3CX

Just wanted to put out there, that the 3CX Certifications are apparently not free any more, If you don't own a commercial subscription on that account. CS quote: "Access to the 3CX certification requires an active commercial subscription".

(3CX SMB and 4SC Free are not commercial licenses btw)

Does anyone know since when this is a thing? I remember doing the Certification for V20 on an unlicensed Account, as we were just evaluating 3CX as a solution.

Hey 3CX folks,

I’m trying to figure out the best way to recreate something we had on an old analog PBX.

There’s an elevator phone system at a hotel I manage. It has its own extension, let’s say 5500. Once connected, the staff has to send *01 for the first elevator or *02 for the second one.

On the old PBX, staff could just dial a 4-digit code and the system would translate it into the full dial string. For example: 6101 → 5500wc*01 and 6102 → 5500wc*02.

I’m trying to achieve something similar in 3CX so the hotel staff can keep using simple 4-digit codes instead of dialing the elevator extension and then entering the DTMF manually.

Would a Call Processing Script be the right way to handle this, or is there a simpler option I’m overlooking?

Any suggestions would be appreciated. Thanks!

Hi there

when we receive inbound calls we route from IVR to a Phone Queue.

On the Queue we've assigned some User.

Recently we get busy and when no User is available the Annoucment "no Agents available" comes.

Is there a way to let the Caller in the Queue with the waiting music, until an agent gets free?

This is a regular occurrence. I'm running a 8SC system for a local healthcare business, receiving hundreds of calls throughout the day. Occasionally, employees receive queue calls which - after (immediately) accepting - play back the holding music, which I assume the inbound caller heard while waiting.

Often the caller then redials (ig because they couldn't hear anything) and everything works as normal.

Someone know why this is happening? I used to believe it's due to the customer hanging up while the phones were still ringing, but that seems unlikely now.

We use lots of Yealink T54W and a Hetzner hosted 3CX instance. SBC hosted on a Raspberry Pi 4.

Does anyone have an idea?

Hi

How would you handle this situation?

Customer had before Microsoft Teams where the User was able to switch between CallProfiles "Company1", "Company2" so that the Name and the Outgoing Number was switched.

On 3CX i can only modify the Trunk itself and would need to create for that 2 separete users right?

Hey there, we’re currently considering Axivox for our Odoo phone system and I’m trying to get an idea of the actual pricing before requesting a quote.

We need:

• 4 phone lines/users
• 1 main/shared number + 3 individual numbers

For anyone currently using Axivox, approximately how much do you pay per month for a similar setup?

Even a rough estimate would be really helpful. Thanks!

just want to go on the record to say it incase someone else is wondering. had to manually attach DID to that ringgroup again.

I am in Manitoba, Canada using 204 area code. Looking for a sip provider that supports sms/mms with 3cx. Of the preferred and supported 3cx providers, Voxtelesys and Voip.ms support sms/mms and can port area code 204. I have not used sms/mms with 3cx.

Anyone in canada that uses Voxtelesys or Voip.ms with 3cx and sms/mms. Could you share your experience and opinions on these providers.

Currently i'm using les.net for voice sip. Low cost and been reliable. Only looking for change to have sms/mms with my business phone number with 3cx system.

Thanks.

Are the servers currently down? It's not letting me log in the admin center, the mobile app is just connecting and the phones ain't ringing....

Hi everyone,

I'm trying to connect a registration-based SIP trunk from a local carrier in Hawaii to 3CX v20.

We currently use Telnyx, which works perfectly over UDP, but we'd like to keep a large block of numbers with our local provider instead of porting them.

The provider requires:

• Registration-based SIP trunk
• TLS (5061)
• SRTP
• Standard TLS (they confirmed mutual TLS is NOT required)

The trunk is configured with:

• Registrar: [local provider domain]
• Outbound Proxy: [local provider proxy]
• Transport: TLS
• Authentication ID and password supplied by the carrier
• DNS SRV resolution is working correctly
• 3CX resolves the SBC and attempts to register

The problem is that registration fails with:

503 Certificate Validation Failure
TLS handshake failed:
SSL_ERROR_SSL: no peer supplied certificate
error:0A000410:SSL routines::sslv3 alert handshake failure

The provider has confirmed:

• We are reaching the correct SBC.
• They do not require a client certificate (mTLS).
• A MicroSIP client registers successfully using the exact same credentials over TLS.
• No client certificate is configured on their trunk.

I've also verified:

• Public IP is allowlisted.
• DNS/SRV resolution is correct.
• Authentication credentials are correct.
• 3CX is sending the REGISTER request.
• OTG isn't involved yet (it's only required on outbound INVITEs).

According to the 3CX Activity Log, the failure occurs during the TLS handshake before SIP registration completes.

Has anyone seen this with a generic TLS SIP provider?

Specifically:

• Is there anything in 3CX that could cause this TLS handshake failure?
• Does 3CX require uploading the provider's root/intermediate CA certificate even when the provider is using standard TLS? The documentation mentions uploading the provider's root CA for TLS trunks, but I'm not sure if that applies here.
• Has anyone run into TLS compatibility issues (TLS version/cipher/SNI) with unsupported providers?

Any suggestions or similar experiences would be greatly appreciated.

Been working with my local provider in Hawaii to provide the SIP trunking to 3CX. We currently use Telnyx and works fine but good chunk of numbers are staying with the local provider so I am exploring options for SIP with them since it'll be easier than porting.

They require to have TLS to the SIP trunk and the we're having a hard time to get it work. The error given on the trunk analysis says 503 Certificate Validation Failure. I asked the provider to see if they can give me the certificate but they kept saying that it's not mTLS and standard TLS so shouldn't require the certificate from the provider.

Appreciate if someone can give me tips on having TLS on the SIP trunking..... Especially with no certs available from the provider.

Has anybody played with the (apparently) new Boss/Secretary option that is offered up now in extension management?

A client of mine runs a small business on 3CX. No IT person, just the manager trying to keep things together.

We ended up building him a small layer on top of 3CX that pulls the CDR, show graphs and charts with the flow of calls, transcribes calls, and gives him a dashboard he can actually read. He just wants to see things like real missed calls, what his agents are doing, and which calls sounded like the customer was frustrated.

- Is anyone else’s non-tech clients completely ignoring 3CX’s built-in reporting?

- What are they actually asking you for instead? For MSPs managing 3CX: do your clients actually look at the native PDF/CSV reports, or they use tools like PowerBI or InsighPBX?

Hi everyone, I’d like to ask for your help with a situation: I have a Grandstream PBX with 30 IP extensions and one IP trunk. Only the first extension can both make and receive calls; the others can only receive them—calls won't go out when attempted. Has anyone else experienced something similar? Do you know what might be causing this?

Thanks in advance

Hello!

One of my clients has asked for assistance with integrating Grok into their 3CX environment.

Has anyone here had any hands-on experience with this? I'm just putting the feelers out to gather some real-world insights, particularly around:

• How straightforward the integration is
• Any pitfalls or gotchas to be aware of
• Advantages and disadvantages you've encountered

I'll be doing my own research to get a proper understanding from a support perspective, but I'd be interested to hear from anyone who's already travelled this path.

At this stage, I'm assuming the client has done some due diligence and has a reasonable use case in mind. They're generally quite proactive and wouldn't usually pursue something like this without putting some thought into it first. That said, the idea hasn't originated from us, so I need to make sure we're prepared to support it properly.

My biggest concern is avoiding a situation where we've rolled it out and then end up fielding a stream of "Why doesn't this work?" questions without fully understanding the underlying integration ourselves. I'd much rather be able to say, "Let's make sure we have a solid grasp of the solution before moving forward with deployment."

Any experiences, lessons learned, or recommendations would be greatly appreciated.

Kind Regards,

SP