UKVoIPTalk.com

I have just transferred my network from satellite 2 way broadband to GPRS/3G
dongle through my mobile operator. I use voip through a Sipura SPA2000 with
Voip provider Draytel. Although my internet works fine I now only get the
dialling tone on my phone but never any connection.
I understand some operators block Voip, is this the case(Movistar,Spain) and
is there a work around for this?
Many thanks

"amp is" <tonyparkinnospam@hotmail.com> wrote in message
news:gcl3u2$vgb$1@aioe.org...[color=blue]
>I have just transferred my network from satellite 2 way broadband to
>GPRS/3G dongle through my mobile operator. I use voip through a Sipura
>SPA2000 with Voip provider Draytel. Although my internet works fine I
>now only get the dialling tone on my phone but never any connection.
> I understand some operators block Voip, is this the
> case(Movistar,Spain) and is there a work around for this?
> Many thanks
>[/color]
When I was doing research on mobile broadband as a replacement for
landline broadband, I found somewhere that the upload speed of the
service I was considering (Three) was not enough to sustain VoIP,
although the download speed was OK, so even if a connection could be
made, this could cause problems that the other party might not hear my
voice, so I abandoned the idea. I don't know if this is causing your
problem, but it is something to check and consider.

Harry Stottle wrote:
[color=blue]
> "amp is" <tonyparkinnospam@hotmail.com> wrote:
>[color=green]
>> I understand some operators block Voip, is this the
>> case(Movistar,Spain) and is there a work around for this?[/color][/color]

You could try opening a VPN tunnel back to e.g. your house and then
route to the Internet from there, but it'll only add to latency issues.
[color=blue]
> landline broadband, I found somewhere that the upload speed of the
> service I was considering (Three) was not enough to sustain VoIP,
> although the download speed was OK[/color]

On T-mobile I get 1.2Mbps down and 1.4Mbps up.

In article <RIqHk.5864$xU3.1341@newsfe19.ams2>,
Harry Stottle <spamisanonoyouknow@spamisanono.uk.co> wrote:[color=blue]
>
>"amp is" <tonyparkinnospam@hotmail.com> wrote in message
>news:gcl3u2$vgb$1@aioe.org...[color=green]
>>I have just transferred my network from satellite 2 way broadband to
>>GPRS/3G dongle through my mobile operator. I use voip through a Sipura
>>SPA2000 with Voip provider Draytel. Although my internet works fine I
>>now only get the dialling tone on my phone but never any connection.
>> I understand some operators block Voip, is this the
>> case(Movistar,Spain) and is there a work around for this?
>> Many thanks
>>[/color]
>When I was doing research on mobile broadband as a replacement for
>landline broadband, I found somewhere that the upload speed of the
>service I was considering (Three) was not enough to sustain VoIP,
>although the download speed was OK, so even if a connection could be
>made, this could cause problems that the other party might not hear my
>voice, so I abandoned the idea. I don't know if this is causing your
>problem, but it is something to check and consider.[/color]

As an experiment, I have successfully placed a VoIP call over both O2
and T-Mobile GPRS data connections. Latency was high and quality was low
(I was using GSM and g729 codecs).

However, it would not surprise me one little bit if your Spanish phone
company blocks VoIP as it's effectively a competing technology and
potentially eats into their revenue. You may also find that you're going
through more than one NAT gateway and that the phone compay run a
network that might be OK for web browsing, but marginal to rubbish for
steaming VoIP, etc.

Gordon

On Thu, 9 Oct 2008 17:17:57 +0000 (UTC), Gordon Henderson
<gordon+usenet@drogon.net> wrote:
[color=blue]
>In article <RIqHk.5864$xU3.1341@newsfe19.ams2>,
>Harry Stottle <spamisanonoyouknow@spamisanono.uk.co> wrote:[color=green]
>>
>>"amp is" <tonyparkinnospam@hotmail.com> wrote in message
>>news:gcl3u2$vgb$1@aioe.org...[color=darkred]
>>>I have just transferred my network from satellite 2 way broadband to
>>>GPRS/3G dongle through my mobile operator. I use voip through a Sipura
>>>SPA2000 with Voip provider Draytel. Although my internet works fine I
>>>now only get the dialling tone on my phone but never any connection.
>>> I understand some operators block Voip, is this the
>>> case(Movistar,Spain) and is there a work around for this?
>>> Many thanks
>>>[/color]
>>When I was doing research on mobile broadband as a replacement for
>>landline broadband, I found somewhere that the upload speed of the
>>service I was considering (Three) was not enough to sustain VoIP,
>>although the download speed was OK, so even if a connection could be
>>made, this could cause problems that the other party might not hear my
>>voice, so I abandoned the idea. I don't know if this is causing your
>>problem, but it is something to check and consider.[/color]
>
>As an experiment, I have successfully placed a VoIP call over both O2
>and T-Mobile GPRS data connections. Latency was high and quality was low
>(I was using GSM and g729 codecs).
>
>However, it would not surprise me one little bit if your Spanish phone
>company blocks VoIP as it's effectively a competing technology and
>potentially eats into their revenue. You may also find that you're going
>through more than one NAT gateway and that the phone compay run a
>network that might be OK for web browsing, but marginal to rubbish for
>steaming VoIP, etc.[/color]
I'd like to see any blocking or stifling of voip to be made completely
illegal!
When voip is blocked is it just the popular voip ports that are
blocked or is it something else? For example, they couldn't block port
80.


---
Remove 'no_spam_' from email address.
---

Brian A wrote:
[color=blue]
> When voip is blocked is it just the popular voip ports that are
> blocked or is it something else? For example, they couldn't block port
> 80.[/color]

They could block it in more intelligent ways than mere port number, they
could inspect the packets for SIP commands.

They could force port 80 through a proxy so that web traffic would still
work, but you couldn't sneak VoIP on port 80 past them.

Just to put you in the picture of the situation in the Spanish countryside
there are no landlines as in cable and telegraph poles. After a 4 year wait
they install a desktop fixed mobile charged at landline rates for rental,
calls & access-the system will not support internet access. So from the same
company I then pay another 46euros a month for 1gig of GPRS data access
through a USB dongle. Add to this all the provided equipment has Blue EU
flags denoting it has been paid for by the EU.
Even this is cheaper than the 5500 euros I.ve spent on 2 way broadband over
the last 3 years. I live along a main road 4 miles from a town-I guess the
beer's cheap!


"amp is" <tonyparkinnospam@hotmail.com> wrote in message
news:gcl3u2$vgb$1@aioe.org...[color=blue]
>I have just transferred my network from satellite 2 way broadband to
>GPRS/3G dongle through my mobile operator. I use voip through a Sipura
>SPA2000 with Voip provider Draytel. Although my internet works fine I now
>only get the dialling tone on my phone but never any connection.
> I understand some operators block Voip, is this the case(Movistar,Spain)
> and is there a work around for this?
> Many thanks
>[/color]

Andy Burns <usenet.oct2008@adslpipe.co.uk> wrote:[color=blue]
> They could block it in more intelligent ways than mere port number, they
> could inspect the packets for SIP commands.[/color]

Or just inject jitter, delay and random connection stops. Web traffic
would work fine, as would Youtube, but VOIP would be too ropey. And you
can't get around it by using a VPN.

Theo

In article <grjse4d55np2j8f4a2rear8o4tjircv31b@4ax.com>,
Brian A <no_spam_bca1000@hotmail.com> wrote:[color=blue]
>On Thu, 9 Oct 2008 17:17:57 +0000 (UTC), Gordon Henderson
><gordon+usenet@drogon.net> wrote:[/color]
[color=blue][color=green]
>>However, it would not surprise me one little bit if your Spanish phone
>>company blocks VoIP as it's effectively a competing technology and
>>potentially eats into their revenue. You may also find that you're going
>>through more than one NAT gateway and that the phone compay run a
>>network that might be OK for web browsing, but marginal to rubbish for
>>steaming VoIP, etc.[/color][/color]
[color=blue]
>I'd like to see any blocking or stifling of voip to be made completely
>illegal![/color]

Their network, their rules.

If they are calling it "Internet Access", then I agree with you, but if
it's (say) an Internet Protocol network with a connection to the global
Internet, then they can do what they like with it. Read the small print...

Gordon

> Their network, their rules.

....but regulation is the price of the electromagnetic spectrum it runs on.