Solved "Select Network Card Interface" only shows private IP

[Connexium Partner]

Hello,

We have an instance installed via the PBX Express to Google Cloud (a little while ago) and in the "Network Settings" -> "Select Network Card Interface", I can only choose the private ip of the PBX


On Google Cloud, the Network interface details seems to be correct:



How could I correct this?

Thank you for your kind assistance

 

[VasilisV_3CX]

Hi @Connexium Partner,

Changing the IP isn't facilitated by 3CX, instead you'll need to check if this is possible on the hosting provider side. You'd need to change the IP on the VM itself. Is there a reason that you'd like to do this?

 

[Connexium Partner]

@VasilisV_3CX

Hello!

I'm only asking this on the 3CX forum because the VM was entirely created by the 3CX PBX Express auto-install on Google Cloud.

The reason I am asking this is; would having the wrong IP (private one) here have adverse impacts on the daily operation of the PBX? Like the default IP in the SDP Signaling? Or elsewhere?


We currently have 2 VM on Google Cloud, both installed via the PBX Express and both have the same issue. Another VM with another provider (not PBX Express) is showing the correct IP. and 2 hosted by 3cx instances where I cannot see the option (disabled).

Thank for any pointers and recommendations

 

[JohnS_3CX]

Hi Connexium,

What you see there is not considered a wrong IP, and you can safely leave it as is.

The PBX is aware of both its local and its public IP, and is smart enough to know when to use each one.

1. For local phones and gateways it uses the private IP. This does not apply to you of course because the PBX is in the cloud.

2. For remote phones and SIP Trunks that work over the internet, it will use its public IP. This is what applies to you in this case


So as you can see there is absolutely no need to make any changes here, the PBX has been designed to know what IP to use and if you were to try changing anything unnecessarily then that's when issues would be likely to occur.

 

[Connexium Partner]

Well, that was a very clear explanation of how the PBX behaves and uses this field!

I can now cross this possibility off my list of potential issues for an ongoing intermittent one way audio for inbound calls we are suffering. At this time, we are fairly certain it's on the trunk provider's side, since the both outbound and inbound IPs are correct in the SDP signaling and are awaiting the result of their investigation.

Thank you again for your kind assistance.

 

[JohnS_3CX]

Glad to help!