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uk.telecom.voip (UK VOIP) (uk.telecom.voip) Discussion of topics relevant to packet based voice technologies including Voice over IP (VoIP), Fax over IP (FoIP), Voice over Frame Relay (VoFR), Voice over Broadband (VoB) and Voice on the Net (VoN) as well as service providers, hardware and software for use with these technologies. Advertising is not allowed.

Using 3G/4G for VOIP - issues?



 
 
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  #1  
Old April 2nd 17, 08:18 PM posted to uk.telecom.voip
Chris Green
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Posts: 169
Default Using 3G/4G for VOIP - issues?

I'm considering setting up a small laptop to use as a VOIP 'phone. I
use VOIP already quite a lot so know the basic ins and outs and I have
accounts at Sipgate and SipDiscount.

If I get a 'MiFi' router and a data only 3G/4G SIM am I likely to hit
any problems with mobile providers not allowing VOIP via their data
SIMs? If so then which providers (if any) do this?

Are there any other gotchas to consider?

--
Chris Green

  #2  
Old April 2nd 17, 10:26 PM posted to uk.telecom.voip
Nick
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Posts: 227
Default Using 3G/4G for VOIP - issues?

On 02/04/2017 19:18, Chris Green wrote:
I'm considering setting up a small laptop to use as a VOIP 'phone. I
use VOIP already quite a lot so know the basic ins and outs and I have
accounts at Sipgate and SipDiscount.

If I get a 'MiFi' router and a data only 3G/4G SIM am I likely to hit
any problems with mobile providers not allowing VOIP via their data
SIMs? If so then which providers (if any) do this?

Are there any other gotchas to consider?

Sound quality can sometimes be poor.
  #3  
Old April 3rd 17, 11:18 AM posted to uk.telecom.voip
David Woolley
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Posts: 99
Default Using 3G/4G for VOIP - issues?

On 02/04/17 19:18, Chris Green wrote:
I'm considering setting up a small laptop to use as a VOIP 'phone. I
use VOIP already quite a lot so know the basic ins and outs and I have
accounts at Sipgate and SipDiscount.



Are there any other gotchas to consider?


There will be no guarantee of timely arrival of media frames, or even
that they will arrive at all.
  #4  
Old April 3rd 17, 12:11 PM posted to uk.telecom.voip
Chris Green
external usenet poster
 
Posts: 169
Default Using 3G/4G for VOIP - issues?

David Woolley wrote:
On 02/04/17 19:18, Chris Green wrote:
I'm considering setting up a small laptop to use as a VOIP 'phone. I
use VOIP already quite a lot so know the basic ins and outs and I have
accounts at Sipgate and SipDiscount.



Are there any other gotchas to consider?


There will be no guarantee of timely arrival of media frames, or even
that they will arrive at all.


.... and that means - in terms of whether VOIP phone calls work or not?
All I want is voice, nothing more.

--
Chris Green

  #5  
Old April 3rd 17, 12:34 PM posted to uk.telecom.voip
Cezar
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Posts: 14
Default Using 3G/4G for VOIP - issues?

On 03/04/2017 11:11, Chris Green wrote:
David Woolley wrote:
On 02/04/17 19:18, Chris Green wrote:
I'm considering setting up a small laptop to use as a VOIP 'phone. I
use VOIP already quite a lot so know the basic ins and outs and I have
accounts at Sipgate and SipDiscount.



Are there any other gotchas to consider?


There will be no guarantee of timely arrival of media frames, or even
that they will arrive at all.


... and that means - in terms of whether VOIP phone calls work or not?
All I want is voice, nothing more.


No one will guarantee that will work. It generally should work when you
have a stable, strong 3G/4G signal and there are no moving parts.

but...
For example, in central London 3G network is so bad that voip probably
won't work. 4G are also stating having hiccups in rush hours.

Interesting is that there is no Voice in 4G networks. Calls are actually
being handled by 2G/3G networks or if your handset can do VoLTE, calls
can go over 4G data as a normal VoIP call, however operators can
guarantee bandwidth for those calls.

c.



  #6  
Old April 3rd 17, 01:04 PM posted to uk.telecom.voip
Chris Green
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Posts: 169
Default Using 3G/4G for VOIP - issues?

cezar wrote:
On 03/04/2017 11:11, Chris Green wrote:
David Woolley wrote:
On 02/04/17 19:18, Chris Green wrote:
I'm considering setting up a small laptop to use as a VOIP 'phone. I
use VOIP already quite a lot so know the basic ins and outs and I have
accounts at Sipgate and SipDiscount.



Are there any other gotchas to consider?


There will be no guarantee of timely arrival of media frames, or even
that they will arrive at all.


... and that means - in terms of whether VOIP phone calls work or not?
All I want is voice, nothing more.


No one will guarantee that will work. It generally should work when you
have a stable, strong 3G/4G signal and there are no moving parts.

but...
For example, in central London 3G network is so bad that voip probably
won't work. 4G are also stating having hiccups in rush hours.

That's true almost anywhere and any time, I accept that. However the
more likely scenario is more isolated places and times. I do have an
'ordinary' smartphone but I'm getting so fed up with its limitations
(mostly due to Android becoming less and less user configurable) that
I'm thinking I'll be happier more of the time with Linux on a laptop.

--
Chris Green

  #7  
Old April 4th 17, 11:17 AM posted to uk.telecom.voip
David Woolley
external usenet poster
 
Posts: 99
Default Using 3G/4G for VOIP - issues?

On 03/04/17 11:11, Chris Green wrote:
There will be no guarantee of timely arrival of media frames, or even
that they will arrive at all.

... and that means - in terms of whether VOIP phone calls work or not?
All I want is voice, nothing more.


It means that there are no guarantees that speech will not be delivered
with poor quality and large round trip times. Large round trip times are
disconcerting and may exceed the abilities of the soft phone's echo
canceller.

4G data is not intended to provide a service suitable for the needs of
speech, but may provide an adequate one, some of the time.
  #8  
Old April 4th 17, 11:24 AM posted to uk.telecom.voip
Andy Burns[_5_]
external usenet poster
 
Posts: 315
Default Using 3G/4G for VOIP - issues?

David Woolley wrote:

4G data is not intended to provide a service suitable for the needs of
speech


Yet VoLTE (where it exists) is just that?


  #9  
Old April 4th 17, 11:38 AM posted to uk.telecom.voip
David Woolley
external usenet poster
 
Posts: 99
Default Using 3G/4G for VOIP - issues?

On 04/04/17 10:24, Andy Burns wrote:
David Woolley wrote:

4G data is not intended to provide a service suitable for the needs of
speech


Yet VoLTE (where it exists) is just that?


In that case, the base station is in a position to allocate resources to
meet the needs of speech and will either use a conventional speech back
haul, or will prioritise the speech on the backhaul.
  #10  
Old April 4th 17, 09:32 PM posted to uk.telecom.voip
stephen
external usenet poster
 
Posts: 381
Default Using 3G/4G for VOIP - issues?

On Tue, 4 Apr 2017 10:38:54 +0100, David Woolley
wrote:

On 04/04/17 10:24, Andy Burns wrote:
David Woolley wrote:

4G data is not intended to provide a service suitable for the needs of
speech


Yet VoLTE (where it exists) is just that?


In that case, the base station is in a position to allocate resources to
meet the needs of speech and will either use a conventional speech back
haul,


Not a lot of point to that - optimising the wireless hop is important
which is why packetised voice on 4G / LTE is highly desired to make
more efficient use of it.

but a mobile co needs to keep the network cost effective, and taking
complications out of the backhaul makes it significantly cheaper to
build and easier to operate.

So much so that there is a thriving market to emulate E1s and other
real time pipes over Ethernet for the old stuff to avoid the need for
multiple backhaul link types......

or will prioritise the speech on the backhaul.

- much more likely, since QoS for packet voice is going to be similar
whether on a GigE point to point or on the point to multipoint radio
shared "last mile"
Stephen Hope
Replace xyz with ntl to reply
 




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