Android app not ringing

[User_123]

Hello,

I know this is a recurring issue but I have followed the troubleshooting recommendations to no avail.
Unfortunately, I cannot access any diagnostic logs that could help identify the root cause.

I run GrapheneOS with Android 12 on a Pixel 3a. The 3CX app is installed in a secondary user account. Google Services are installed so the push notifications should work.

The web app rings but clicking the hangup button doesn't work.

Edit: I just learned that the Pixel 3a is no longer supported by GrapheneOS, which might explain the issue.

 

[TheodorosG_3CX]

This can explain your issue. For the same extension but while using another Android device, the issue is the same?

 

[User_123]

This can explain your issue. For the same extension but while using another Android device, the issue is the same?

Actually I haven't tried. Let me get back to you.

 

[TheodorosG_3CX]

Give it a try and let us know.

 

[User_123]

The problem is not my device, thankfully. It is my network. Call reception worked when I switched to mobile data, but I am planning on unsubscribing so I need to fix this network issue. I looked at my Pi-hole logs and I didn't see any blocked domain.

 

[TheodorosG_3CX]

This might require to check with some captures as well but in any case since this is related with your network you may also check guideline below for more information:
• https://www.3cx.com/docs/manual/firewall-router-configuration/

 

[User_123]

This might require to check with some captures as well but in any case since this is related with your network you may also check guideline below for more information:
• https://www.3cx.com/docs/manual/firewall-router-configuration/

I use the free cloud version with the android app. Is it doomed to fail when we are behind a router that blocks all incoming traffic? So let's say if I connect to a public WIFI I couldn't receive calls even if I enable the "Keep active" option ?

 

[TheodorosG_3CX]

The keep active option will keep the extension registered.
Now if the PUSH servers are restricted in your network you will never receive notification.

 

[User_123]

The keep active option will keep the extension registered.
Now if the PUSH servers are restricted in your network you will never receive notification.

Can you be more specific? I do get notifications about missed calls but that's all. I thought a tunnel connection would allow the push notifications to get through.

 

[TheodorosG_3CX]

PUSH is sent through the PUSH servers of Google and Apple, the tunnel connection is not for the PUSH

 

[User_123]

PUSH is sent through the PUSH servers of Google and Apple, the tunnel connection is not for the PUSH

It seems to me like a better way would be to handle the push notification via the tunnel instead of relying on the network having open ports. Or at least give the option.

 

[TheodorosG_3CX]

PUSH is not something we manage entirely as it depends on the PUSH servers of Google and Apple.

 

[User_123]

The 3CX Android App PUSH Troubleshooting guide at https://www.3cx.com/docs/android-push-troubleshooting/ says:

If you have installed 3CX on premise, or are self hosting 3CX behind a firewall that you manage, it can very well be that your firewall is blocking communication to the Google Firebase Cloud Messaging (FCM) service

This doesn't apply to me because I use the free cloud version hosted by 3CX.

 

[User_123]

It works now after realizing my Pi-Hole config was blocking required domains in this list.

• mtalk.google.com
• mtalk4.google.com
• mtalk-staging.google.com
• mtalk-dev.google.com
• alt1-mtalk.google.com
• alt2-mtalk.google.com
• alt3-mtalk.google.com
• alt4-mtalk.google.com
• alt5-mtalk.google.com
• alt6-mtalk.google.com
• alt7-mtalk.google.com
• alt8-mtalk.google.com
• android.apis.google.com
• device-provisioning.googleapis.com
• firebaseinstallations.googleapis.com

Source: https://firebase.google.com/docs/cloud-messaging/concept-options#messaging-ports-and-your-firewall

No need to open firewall ports.

 

[TheodorosG_3CX]

Glad to know the issue is resolved

 

[elc]

I have same problem to iphone phone not ringing

 

[TheodorosG_3CX]

@elc Please create a new post in the correct forum section.

 

[elc]

sorry about that ı create new post in the correct forum section.

 

[TheodorosG_3CX]

No worries it is just good to keep an order to each case so people don't get confused