Unsupported Ericsson/LG IP-9802 phones

[talesmaschio]

Hi everyone,

Before anything, please allow me to say this: I know I would be better getting supported phones. I am aware of the brands and models that are supported and I'm also aware of the risks of using unsupported phones in a business environment.

I found two old topics mentioning Ericsson/LG phones, but none offered me conclusive information. Has anyone been using these models with 3CX more recently? I have in my site 30 units of the model IPECS IP-9802 and 40 units of the older model LIP-8002. Theres LIP-8002s were already due to replacement as they have other problems, but I need to keep the IP-9802s for now.

I have sucessfully registered one of them and I'm able to originate calls from it, but it doesn't receive calls and it doesn't show under the Phones list (other unsupported brands/models show as UNPROVISIONED but they work very well). I can see activity on Wireshark when originating a call from one of the 9802s, but no traffic when trying to call it from another extension. It's important to mention that the same extension has an android app registered, which ring normally when called. The desk phone and the android are in different VLANs, each one having its own NIC in the server .

Do you think this is something that could be solved with a dedicated template?

I thank you all in advance for sharing your experience, even if you need to mention the usual disclaimers

Regards,
Tales

 

[JohnS_3CX]

Hi Tales,

Phones need to register before they can make calls so unless a registration took place, the phone will not send an invite.

This might help you with registration, but there is no guarantee those specific models will end up working.
https://www.3cx.com/community/threa...-phone-how-can-i-make-it-work-with-3cx.84739/

You also mentioned you use VLANs, so you might wanna snoop the LAN port of the phone instead of only capturing the traffic the server sees. You might have a network issue where the traffic from the phone never reaches the server.

If it doesn't work, you could also consider selling the unsupported phones and perhaps getting some second hand supported models if the issue is due to budgeting. At least that way you can get your calls going until later when it becomes feasible to get fresh devices.

Good luck!

 

[talesmaschio]

Hello John,

Thanks for your reply!

I mirrored ports at the switch where both a Fanvil X6U and an Ericsson/LG IP-9802 are connected and captured the traffic during a reboot and when originating calls. The Fanvil clearly registers with both PBX systems after rebooting (besides the 3CX test setup I have our current PBX in operation). The ELG does not exchange traffic at all with the 3CX server.

It's now more obvious why the ELG doesn't ring or even show up in the Phones list, but I'm surprised it can originate calls. It follows below the captured packets, in case you are ok spending some time to look at them.

Fanvil X6U registers during reboot:


Ericsson/LG IP-9802 registers during reboot, see that it doesn't talk to 10.1.118.1 (3CX):


Fanvil originates a call:


ELG originates a call - does the same as the Fanvil, and it sends the invite despite not being registered.


EDIT: Ericsson/LG show REGISTERED at its web interface:



Regards,
Tales

 

[JohnS_3CX]

I don't think these are the same phone (provided the capture is correct).
One of the two LG phones is trying to speak to a different server, you might wanna check that.

Also you see when the LG originates a call you get Trying, Ringing, then CANCEL. So it might actually be working.

I'm afraid I cannot advise any further on unsupported phones, but if you filter strictly / correctly and spend more time in wireshark you might be able to track down something that will help you.

 

[talesmaschio]

Yes they are the same phone. Both phones are connected to two systems, our legacy MX-One and the new 3CX that's being evaluated. You can see that the Fanvil correctly registers to both but the ELG only registers to MX-One and doesn't talk to 3CX.

I understand you not being able to go further, thank you very much for your advice so far. I will indeed spend some more time on Wireshark and try to figure out what is going on that I don't see the ELG registering and yet it can place calls.

I will post my findings, if any.

Regards,
Tales