From Newsgroup: uk.telecom.mobile

This is something I may not have noticed before, but when I called a
mobile number in Denmark, I got a UK (ring-ring) ringing tone. Has
this always been the case?
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: uk.telecom.mobile

Scott <newsgroups@gefion.myzen.co.uk> wrote:

This is something I may not have noticed before, but when I called a
mobile number in Denmark, I got a UK (ring-ring) ringing tone. Has
this always been the case?

Did you call it from a mobile or a landline?

--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: uk.telecom.mobile

On Mon, 23 Jun 2025 15:48:05 -0000 (UTC), Tweed
<usenet.tweed@gmail.com> wrote:

Scott <newsgroups@gefion.myzen.co.uk> wrote:

This is something I may not have noticed before, but when I called a
mobile number in Denmark, I got a UK (ring-ring) ringing tone. Has
this always been the case?

Did you call it from a mobile or a landline?

I called it from a VOIP landline.
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: uk.telecom.mobile

Scott wrote:

Tweed wrote:

Did you call it from a mobile or a landline?

I called it from a VOIP landline.

from a UK voip provider?


--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: uk.telecom.mobile

Scott <newsgroups@gefion.myzen.co.uk> wrote:

On Mon, 23 Jun 2025 15:48:05 -0000 (UTC), Tweed
<usenet.tweed@gmail.com> wrote:

Scott <newsgroups@gefion.myzen.co.uk> wrote:

This is something I may not have noticed before, but when I called a
mobile number in Denmark, I got a UK (ring-ring) ringing tone. Has
this always been the case?

Did you call it from a mobile or a landline?

I called it from a VOIP landline.

I think the ringing tone (also called ringback tone) is generated locally
by VoIP systems

https://www.yay.com/blog/voip-phones/ringback-tones/


--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: uk.telecom.mobile

On Mon, 23 Jun 2025 17:58:04 +0100, Andy Burns <usenet@andyburns.uk>
wrote:

Scott wrote:

Tweed wrote:

Did you call it from a mobile or a landline?

I called it from a VOIP landline.

from a UK voip provider?

Yes, Zen.
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: uk.telecom.mobile

Scott wrote:

Andy Burns wrote:

Scott wrote:

Tweed wrote:

Did you call it from a mobile or a landline?

I called it from a VOIP landline.

from a UK voip provider?

Yes, Zen.

By your IP addr they could tell if you were likely outside the UK, but
why should they bother to generate a Danish ringback tone?

--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: uk.telecom.mobile

On Mon, 23 Jun 2025 18:27:24 +0100, Andy Burns <usenet@andyburns.uk>
wrote:

Scott wrote:

Andy Burns wrote:

Scott wrote:

Tweed wrote:

Did you call it from a mobile or a landline?

I called it from a VOIP landline.

from a UK voip provider?

Yes, Zen.

By your IP addr they could tell if you were likely outside the UK, but
why should they bother to generate a Danish ringback tone?

I was inside the UK, calling a Danish mobile number. Previously when I
have called Denmark I have encountered the long tone (tone - pause -
tone). I just wondered what was going on.
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: uk.telecom.mobile

On 23/06/2025 18:29, Scott wrote:

On Mon, 23 Jun 2025 18:27:24 +0100, Andy Burns <usenet@andyburns.uk>
wrote:

Scott wrote:

Andy Burns wrote:

Scott wrote:

Tweed wrote:

Did you call it from a mobile or a landline?

I called it from a VOIP landline.

from a UK voip provider?

Yes, Zen.

By your IP addr they could tell if you were likely outside the UK, but
why should they bother to generate a Danish ringback tone?

I was inside the UK, calling a Danish mobile number. Previously when I
have called Denmark I have encountered the long tone (tone - pause -
tone). I just wondered what was going on.

Sorry, i thought you meant you were travelling ...

--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: uk.telecom.mobile

Tweed <usenet.tweed@gmail.com> wrote:

Scott <newsgroups@gefion.myzen.co.uk> wrote:

On Mon, 23 Jun 2025 15:48:05 -0000 (UTC), Tweed
<usenet.tweed@gmail.com> wrote:

Scott <newsgroups@gefion.myzen.co.uk> wrote:

This is something I may not have noticed before, but when I called a
mobile number in Denmark, I got a UK (ring-ring) ringing tone. Has
this always been the case?

Did you call it from a mobile or a landline?

I called it from a VOIP landline.

I think the ringing tone (also called ringback tone) is generated locally
by VoIP systems

https://www.yay.com/blog/voip-phones/ringback-tones/

When I call my home number (UK) from a mobile in France (idNet,
roaming) the ringing tone changes randomly from the UK style to the
'rest of the world' style. There seems no logic to which one I get.
--
Chris Green
-+
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: uk.telecom.mobile

On 23/06/2025 17:16, Scott wrote:

I called it from a VOIP landline.

Used efficiently, the ring back tone is generated by the local VoIP
phone. It's possible for the something more remote to send ring back as
early media, but that increases the bandwidth used for potentially
non-revenue generating calls.

Did you get a SIP 180 response, or was it 183?
--- Synchronet 3.21a-Linux NewsLink 1.2

From Newsgroup: uk.telecom.mobile

On 23/06/2025 16:38, Scott wrote:

This is something I may not have noticed before, but when I called a
mobile number in Denmark, I got a UK (ring-ring) ringing tone. Has
this always been the case?

In my experience you can get either a UK or RoW ring tone, in either
direction too.

I think it depends I think upon how many iterations of coding the call
has been through, and some systems rely on the far end to produce the
ring tone, others the sending end ? Someone will know chapter and verse.

I was in Spain for a fortnight in February, there any call to a UK
mobile (either within Spain or back in the UK) had NO ringtone, I
dialled the number, there was a silence, then the person the other end
started talking. At first I thought they were just answering quickly,
but no. I conducted some experiments with a colleague back home. He got
a ring tone phoning me, but not the other way. If he didn't answer his
phone after 30 seconds of silence I'd get his Voicemail (Obvs I suppose)
--- Synchronet 3.21a-Linux NewsLink 1.2