Provisionning problem with Yealink T41S

[MksBe]

Hi there,

I run a 3CX lab and I try to provision a T41S phone.

I have the supported firmware on the phone
I have reset it to factory default

But he doesn't appear in the phones tab. (I have followed the guide : https://www.3cx.com/sip-phones/yealink-t4-series/ )

I can connect to the phone interface
The server and the phone are on the same switch and same network
SIP port used by PBX is 5060

I don't understand...

I've tried to add it manually with his mac adress and link it to my extension but I doesn't work.

When I plug the phone to the switch, he boot and I have this messages on the screen :

1. sending provision requests
2. Update skipped !

Then the phone is booted and show "Warning no service" on the screen.

Any idea ?

 

[MksBe]

Thanks, you made my day !

 

[MksBe]

So, right now we can focus on the problem of provisionning

Why does it work lite this and not in the normal way explained here : https://www.3cx.com/sip-phones/yealink-t4-series/ ?

Is it due to the 2nd and unnecessary NIC ?

 

[JohnS_3CX]

Hi MksBe

The provisioning relies on multicast. Sounds like the the PBX is not listening to multicast on the LAN card that is connected to the phone's network

 

[MksBe]

Ok, so, maybe a problem caused by the 2nd car on the server...

I will do a new setup and keep you updated

 

[JohnS_3CX]

you can also check with this command to see what interfaces are joined in multicast

 

[Clément Rousseau]

Hi,
cant really help more than others comments for double network related issue.

for provisionning only :
I have encounter similar problem regulary, asked on this forum and someone pm me a solution which solve the problem in my case.
When you do "netstat -g" on your 3CX terminal, if you dont see sip multicast running as service, you need to go from 3cx main page into "services" and restart the sip server. After that you can check sip multicast is running with same command as before and provisionning works.
It solve the issue for us, we have to do it for every install, 3CX is on a debian NUC, NUC not supported by 3CX (3cx only support older NUC).

 

[MksBe]

Hi there, there is no more 2nd NIC

But the problem continue...

I will try your trick.

Regards

 

[AWS2P]

Hi @Clément Rousseau
netstat -g option doesn't exist

 

[Clément Rousseau]

netstat -g is on debian, I dont know wich command you have in windows, but just try restart sip server service as explained in my previous post and try auto-provisionning again, netstat -g just show if multicast sip is running or not.