phone not connecting when on another (vpn connected) subnet

[GVB]

Hello,

I have prepared some phones for another site.

While these phones work fine locally the phone I took with me to the other site simply doesn't connect.

The current situation is like this.

3CX server 192.168.0.52
Fanvil X3G phone 192.168.10.118

There's a site to site vpn between the 2 sites set up with EdgeMax routers

I can connect from .0 to the phone webUI at .10.118
I can connect from a pc next to the phone to the 3CX web console & server (rdp) aswell

so routing is ok.

yet the phone is still not connecting and giving either a "TIME OUT" or "Failed With 404" error.

do I need to allow that .10 subnet in 3CX or something?

 

[GVB]

Can you just tell me which ports are used for the registering?

Is this the 5000/5001 combo or 5060?

 

[eddv123]

5060 is standard SIP registration, since you are using VPN and the traffic is seen as "local".

Https - 5001 is for provisioning normally external endpoints so for local provisioning you are normally looking at port 5000. https://www.3cx.com/docs/ports/ if you have kept everything as default.

 

[GVB]

things were acting strange here and disabling nat, excluding from nat and firewall rules didn't seem to solve anything.

after a reboot of the router the phone registered!

it seems that the router was freaking out on this for some reason.