Unifi UVP & 407 Proxy Authentication Error

[NNERBO]

Hello members. I have integrated Twillo with 3CX and calls are registering on 3CX but I can't dial out and any incoming goes right to voice mail.

I have searched countless threads without any luck.

I believe it is a setting in my UVP that is causing the issue.
The UVP is adopted, and registered to 3CX no problem.

SIP Server/Call Manager ID: 4101
Extension MakeCall is registered, contact: sip:[email protected]:5483;rinstance=5dcf1865f3234155, received from: 127.0.0.1

Wireshark - in Call Invite 200 error (incoming)
Wireshark - Rejected Invite 407 error (outgoing)

Thank you so much in advance.

 

[Evolute IT]

Hello members. I have integrated Twillo with 3CX and calls are registering on 3CX but I can't dial out and any incoming goes right to voice mail.

I have searched countless threads without any luck.

I believe it is a setting in my UVP that is causing the issue.
The UVP is adopted, and registered to 3CX no problem.

SIP Server/Call Manager ID: 4101
Extension MakeCall is registered, contact: sip:[email protected]:5483;rinstance=5dcf1865f3234155, received from: 127.0.0.1

Wireshark - in Call Invite 200 error (incoming)
Wireshark - Rejected Invite 407 error (outgoing)

Thank you so much in advance.

Have you whitelisted your PBX IP on Twilio? They require quite a config to get their SIP Trunk working.

 

[NNERBO]

Yup, whitelisted my WAN on there. I have also tried setting up OnSip with the same results - has to be an issue with the actual Unifi phone. Going to keep talking the issue with some trial/error.

 

[Evolute IT]

Yup, whitelisted my WAN on there. I have also tried setting up OnSip with the same results - has to be an issue with the actual Unifi phone. Going to keep talking the issue with some trial/error.

I never used Unifi phones but this might be due to codecs mismatch, imcompatible SIP headers, or more.

I strongly recommend you stick with supported IP phones to avoid any issues and also to be supported by both 3CX and the phone brand.

 

[Evolute IT]

Yup, whitelisted my WAN on there. I have also tried setting up OnSip with the same results - has to be an issue with the actual Unifi phone. Going to keep talking the issue with some trial/error.

Also, how is the phone registered? STUN, SBC or local LAN (can be VPN)? It might be port issues. Some firewall are tricky with VoIP because of RTP dynamic ports.

 

[NNERBO]

Thank you Frederick, it's registered by lan. (Unifi UVP showing registered to 3CX) so its not an issue there. Had I known about the UNIFI UVP issues ( many people have had issues with them), I would have gone another route. For now, I may pickup a supported phone to at least rule out the UVP phone itself. At this point, I think it's all I can do.