Solved Trouble setting up Telnyx SIP Trunk

[SOTASOTA]

I have gone through all the guides, and tried setting up Telnyx SIP trunks to my profile.
The trunks simply will not register.






Help please!

[Edited by Administrator]

 

[Rashid Raza]

Ping will show the remote IP, not the PBX one.

Yes add the remote IP in 3cx Whitelist Option

 

[Evolute IT]

OK, I added all the IPs on the 3CX system to Telnyx. No joy.
ping Telynx and got 192.76.120.10
Not sure how to whitelist this?

It doesn't matter.

Yes add the remote IP in 3cx Whitelist Option

As above, it doesn't matter. The Telnyx IP would not get blocked by 3CX. And Telnyx doesn't block IPs right now, only during DDoS attacks, but it is always good to have the PBX whitelisted in there.

 

[Evolute IT]

@YiannisH_3CX We DMed you.

 

[SOTASOTA]

Thanks for checking my setup via the Zoom call!! Hopefully

YiannisH_3CX can see what is going on.​

 

[SwaggerRO19]

@SOTASOTA just been through this issue with Telnyx on my own.

I moved my PBX from on-prem to Cloud on VULTR, and the IP Address that has been assigned to my compute was now whitelisted on Telnyx's Portal, so the SIP Trunks were not getting up.

After contacting them, I figured out that if I add the IP Address on the My Account, the trunk will go up.

Try to whitelist the IP Address as the colleague @Rashid Raza mentioned in a comment on this thread and you will see it working.

Hope this helps.

P.S: This was put in place after Telnyx was DDoS'ed about 2-3 weeks ago.

 

[SwaggerRO19]

The best solution is to create the SIP Trunk from scratch by selecting a new SIP Trunk from 3CX country Worldwide

All the settings must be the default

Just add the Username password from Telnyx and finish.

This will do the trick if the Telnyx SIP Trunk it's not registering.

 

[SOTASOTA]

We tried all that, still no joy. Telnyx support guy is on the case. I have to wait to hear back.

 

[Evolute IT]

@SOTASOTA just been through this issue with Telnyx on my own.

I moved my PBX from on-prem to Cloud on VULTR, and the IP Address that has been assigned to my compute was now whitelisted on Telnyx's Portal, so the SIP Trunks were not getting up.

After contacting them, I figured out that if I add the IP Address on the My Account, the trunk will go up.

Try to whitelist the IP Address as the colleague @Rashid Raza mentioned in a comment on this thread and you will see it working.

Hope this helps.

P.S: This was put in place after Telnyx was DDoS'ed about 2-3 weeks ago.

This will do the trick if the Telnyx SIP Trunk it's not registering.

Whitelisting only applies during DDoS attacks. Oh, and we tried that. As I said, I use Telnyx, I know what to do.