Unsupported Grandstream GDS3712 calls rejected by 3cx?

[karl.camilleri]

Hi,

We have a customer who has deployed a Grandstream GDS3712 as their intercom, it is registered to their 3cx instance along with 2 T44U's and a few W70B DECT bases, for some reason the programmed number (I've tried both queue number and reception extension number) gets rejected by 3cx. Is there any way to determine why? I see in the pcap from 3cx that it's rejected with 407 proxy auth required. I was wondering if the issue is caused by video attributes that seem to be coming from the GDS3712. Has anyone got some experience with these intercom systems that can shed light into the matter. At one point I also tried IP calling to the Yealink reception phone but it didn't make a difference.

Regards,
Karl

 

[paulodagraca]

Hello karl.camilleri,

Just a few questions:
Did you follow these instructions?
https://www.3cx.com/sip-phones/grandstream-doorphones

Correct firmware in the device?
https://www.3cx.com/docs/phone-firmwares

Paulo

 

[leejor]

You might want to read this older post on the message you are seeing. Is the set responding, that is the question?

Solved Thread 'Proxy authentication required'

Oct 20, 2017

Hi All,

I have a local pbx with local ip phones. Everything is working correctly and I am currently having no issues. I was playing with the new capture tool and looking at the pcap files using wireshark.

I have noticed that I am getting a 407 - Proxy authentication required originating from my 3cx server to each extension that is making a call.

Is this something I need to worry about or just let it go. The pbx has been online for more than 6 + months and I have not had any issues.

• THCO
• Replies: 5
• Forum: Phone System / PBX