When you get a ring, possibly you could ask the person you are calling what is their provider to see if there is a pattern. I'm not even sure that it is network related or if it depends on the specific tower the phone is connected to...

@wally said:

it's still worth trying to figure out when it does/doesn't happen

I'll should be able to figure it out since I have now ofono traces for calling a number that reliably rings versus another that reliably don't, but it's not so easy, I have only figured out yesterday where this ringing is triggered, there is probably quite a lot more research to do.

@gpatel-fr I have also experienced the odd ring when dialing out since my OP N10 got VoLTE, but mostly not.
I thought maybe it was only occurring when I was connected over 3G, but no, after dialing some random 1-800 numbers it happens the same for a given number whether I'm on VoLTE or 3G/H.

I don't really see lack of ring as much of an issue (I'm still just amazed and grateful to have VoLTE!) but it's still worth trying to figure out when it does/doesn't happen. I'll start looking for whether its network dependent.

I just did a few tests, here in France there is not much variety in primary networks, we have 4 providers: Orange (the most important, historical provider), SFR, Bouygues and Free (my provider).

As far as I can tell (I don't have thousands of numbers to call to do a proper statistic) calls toward Orange and SFR ring, calls toward Bouygues and Free don't. The fact that a number is fixed or mobile don't matter.

@gpatel-fr said:

yes, that's probably some signal that is not understood by the phone handler, to me it seems linked to the callee's cellular network as ringing works or not consistently, depending on the person I call.

I don't call many numbers, but no call ever had a ringtone. Neither mobile numbers nor fixed lines or the one international call

@gandalf said:

no ringing tone when making a call

yes, that's probably some signal that is not understood by the phone handler, to me it seems linked to the callee's cellular network as ringing works or not consistently, depending on the person I call.

• no reconnect after loss of connection (e.g. going to a basement without reception)

• volte breaks when connecting to a wifi network and does not reconnect when disabling wifi. But it keeps working when enabling or disabling the wlan hotspot

• after any of these two events the status indicator sometimes shows the volte sign, but as soon as I make or receive a call it will drop back to 3g (for as long as that still works, my provider announced the shutdown).

• no ringing tone when making a call

@OS-on-ID-0 said:

working VoIP in OnePlus Nord N10 5G...

You mean VoLTE, I suppose ?
(because if VoLTE is VoIP, not all VoIP systems are VoLTE)

I would like to give a little status update.
I am on the latest RC 24.04-1.2 and have a Volla X23 mobile phone.

VoLTE has been working for me for a long time. But the usage is not good.

Since it was available there has been no ringtone when dialing. So it's hardly usable.

A bug report was created weeks ago.

Many greetings
Charly

"I recently installed UT on my Nord N10 5g BE2026, and I am using a daily image which shows as 24.04-1.x (2026-02-17/2).

VoLTE works for me.

I'm using a Redpocket SIM on AT&T as my carrier."

Source: https://forums.ubports.com/topic/11933/anyone-daily-driving-the-nord-n10-5g-in-usa

Thank you messayisto for the bug report.
I have tested VoLTE again lately. There is still no dial tone. The called one simply talks about.

Greetings
Charly

I can say that it seems to depend on the person I call - or more probably the technology they are using. I suspect call tone is working when calling people connected via 2G but I can't prove it. I use a FP5 so this is not related to Volla.

I can say that there messages in the exchanged data blocks that are unknown from the UT telephony stack, but no idea if there are call tones indicators hidden in this mysterious data. Maybe just decoding and interpreting them could be enough. It seems likely because I can't see a reason why the cellular providers would not send the call info to UT phones specifically. But in the real world, things can sometimes get very complicated.