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uk.telecom.broadband (UK broadband) (uk.telecom.broadband) Discussion of broadband services, technology and equipment as provided in the UK. Discussions of specific services based on ADSL, cable modems or other broadband technology are also on-topic. Advertising is not allowed.

DECT and FTTC, any known issues?



 
 
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  #1  
Old January 8th 20, 10:37 AM posted to uk.telecom.broadband
Chris Green
external usenet poster
 
Posts: 224
Default DECT and FTTC, any known issues?

Following on from my posting in uk.telecom about our DECT phone
problems (not detecting some calls and not always clearing down) it
occurred to me that the only (fairly) recent change to our line was
a switch from ADSL to FTTC.

Are there any known problems likely to occur when using an FTTC line
with DECT? Are filters more critical for example?


Any other possibilities?

--
Chris Green

  #2  
Old January 8th 20, 10:53 AM posted to uk.telecom.broadband
Graham J[_3_]
external usenet poster
 
Posts: 133
Default DECT and FTTC, any known issues?

Chris Green wrote:
Following on from my posting in uk.telecom about our DECT phone
problems (not detecting some calls and not always clearing down) it
occurred to me that the only (fairly) recent change to our line was
a switch from ADSL to FTTC.

Are there any known problems likely to occur when using an FTTC line
with DECT? Are filters more critical for example?


Any other possibilities?



I would anticipate problems where the DECT phone interferes with the
FTTC service, particularly if the distance to the green cabinet is long.

But vice versa, no.

Do these faults coincide exactly with the change to FTTC?

If you test with **ONLY** a simple wired phone, does that show similar
faults? Is the line quiet? (Run the test, dial 17070)

--
Graham J
  #3  
Old January 8th 20, 11:28 AM posted to uk.telecom.broadband
Roderick Stewart
external usenet poster
 
Posts: 585
Default DECT and FTTC, any known issues?

On Wed, 8 Jan 2020 09:37:06 +0000, Chris Green wrote:

Following on from my posting in uk.telecom about our DECT phone
problems (not detecting some calls and not always clearing down) it
occurred to me that the only (fairly) recent change to our line was
a switch from ADSL to FTTC.

Are there any known problems likely to occur when using an FTTC line
with DECT? Are filters more critical for example?


I can't think why DECT and ADSL would be expected to interact, as the
frequencies are vastly different, by a factor of a thousand or so.

They're both RF, so there's always the possibility of a bad electrical
connection somewhere causing partial rectification, which could upset
DC conditions and maybe cause problems. Or your phone could be faulty.

I've put DECT base stations and ADSL/VDSL modems next to each other
only inches apart without any problems, so they're clearly designed to
be capable of working like that.

Rod.
  #4  
Old January 8th 20, 11:38 AM posted to uk.telecom.broadband
Andy Burns[_5_]
external usenet poster
 
Posts: 451
Default DECT and FTTC, any known issues?

Graham J wrote:

I would anticipate problems where the DECT phone interferes with the
FTTC service


Why? The DECT is just a POTS device, it's operating on the baseband
part of the line under 3000Hz, not on the broadband part ...
  #5  
Old January 8th 20, 11:52 AM posted to uk.telecom.broadband
grinch
external usenet poster
 
Posts: 73
Default DECT and FTTC, any known issues?

On 08/01/2020 10:28, Roderick Stewart wrote:
On Wed, 8 Jan 2020 09:37:06 +0000, Chris Green wrote:

Following on from my posting in uk.telecom about our DECT phone
problems (not detecting some calls and not always clearing down) it
occurred to me that the only (fairly) recent change to our line was
a switch from ADSL to FTTC.

Are there any known problems likely to occur when using an FTTC line
with DECT? Are filters more critical for example?


I can't think why DECT and ADSL would be expected to interact, as the
frequencies are vastly different, by a factor of a thousand or so.

They're both RF, so there's always the possibility of a bad electrical
connection somewhere causing partial rectification, which could upset
DC conditions and maybe cause problems. Or your phone could be faulty.

I've put DECT base stations and ADSL/VDSL modems next to each other
only inches apart without any problems, so they're clearly designed to
be capable of working like that.

Rod.

This is not very scientific, but some fritzbox routers support dect
v/adsl and wifi in the same router, so I doubt there is an issue caused
by the dect phone.

Most likely issue is a faulty/ going faulty phone ,the only other
possible issue is that the incoming level of the phone line is less than
it used to be. That would have caused an issue straight away though I
would have thought.

As suggested before try an analogue phone as well and see if that works.
If that works is does tend to point the finger at the dect phone being
the issue.
  #6  
Old January 8th 20, 01:33 PM posted to uk.telecom.broadband
R. Mark Clayton[_2_]
external usenet poster
 
Posts: 650
Default DECT and FTTC, any known issues?

On Wednesday, 8 January 2020 09:48:04 UTC, Chris Green wrote:
Following on from my posting in uk.telecom about our DECT phone
problems (not detecting some calls and not always clearing down) it
occurred to me that the only (fairly) recent change to our line was
a switch from ADSL to FTTC.

Are there any known problems likely to occur when using an FTTC line
with DECT? Are filters more critical for example?


Any other possibilities?

--
Chris Green


Is there a filter on the phone port the DECT station is plugged into?

I would not expect any problems if the DECT is on POTS and IMO unlikely if on VOIP.
  #7  
Old January 8th 20, 01:48 PM posted to uk.telecom.broadband
Chris Green
external usenet poster
 
Posts: 224
Default DECT and FTTC, any known issues?

Graham J wrote:
Chris Green wrote:
Following on from my posting in uk.telecom about our DECT phone
problems (not detecting some calls and not always clearing down) it
occurred to me that the only (fairly) recent change to our line was
a switch from ADSL to FTTC.

Are there any known problems likely to occur when using an FTTC line
with DECT? Are filters more critical for example?


Any other possibilities?



I would anticipate problems where the DECT phone interferes with the
FTTC service, particularly if the distance to the green cabinet is long.

But vice versa, no.

Do these faults coincide exactly with the change to FTTC?

I'm not really sure, I'm clutching at straws somewhat, but there's
definitely a problem of some sort with our DECT.


If you test with **ONLY** a simple wired phone, does that show similar
faults? Is the line quiet? (Run the test, dial 17070)

How would it show similar faults? I will try the line test though, it
might be useful.

--
Chris Green

  #8  
Old January 8th 20, 01:51 PM posted to uk.telecom.broadband
Chris Green
external usenet poster
 
Posts: 224
Default DECT and FTTC, any known issues?

grinch wrote:
On 08/01/2020 10:28, Roderick Stewart wrote:
On Wed, 8 Jan 2020 09:37:06 +0000, Chris Green wrote:

Following on from my posting in uk.telecom about our DECT phone
problems (not detecting some calls and not always clearing down) it
occurred to me that the only (fairly) recent change to our line was
a switch from ADSL to FTTC.

Are there any known problems likely to occur when using an FTTC line
with DECT? Are filters more critical for example?


I can't think why DECT and ADSL would be expected to interact, as the
frequencies are vastly different, by a factor of a thousand or so.

They're both RF, so there's always the possibility of a bad electrical
connection somewhere causing partial rectification, which could upset
DC conditions and maybe cause problems. Or your phone could be faulty.

I've put DECT base stations and ADSL/VDSL modems next to each other
only inches apart without any problems, so they're clearly designed to
be capable of working like that.

Rod.

This is not very scientific, but some fritzbox routers support dect
v/adsl and wifi in the same router, so I doubt there is an issue caused
by the dect phone.

Most likely issue is a faulty/ going faulty phone ,the only other
possible issue is that the incoming level of the phone line is less than
it used to be. That would have caused an issue straight away though I
would have thought.

As I said (in the other thread) I've changed the DECT base station and
I have also changed the POTS phone, the symptoms are just the same.


As suggested before try an analogue phone as well and see if that works.
If that works is does tend to point the finger at the dect phone being
the issue.


It's not a very consistent fault, maybe happens on one call in ten and
it does seem to happen most often with one particular caller.

--
Chris Green

  #9  
Old January 8th 20, 01:52 PM posted to uk.telecom.broadband
Chris Green
external usenet poster
 
Posts: 224
Default DECT and FTTC, any known issues?

R. Mark Clayton wrote:
On Wednesday, 8 January 2020 09:48:04 UTC, Chris Green wrote:
Following on from my posting in uk.telecom about our DECT phone
problems (not detecting some calls and not always clearing down) it
occurred to me that the only (fairly) recent change to our line was
a switch from ADSL to FTTC.

Are there any known problems likely to occur when using an FTTC line
with DECT? Are filters more critical for example?


Any other possibilities?

--
Chris Green


Is there a filter on the phone port the DECT station is plugged into?

I would not expect any problems if the DECT is on POTS and IMO unlikely if on VOIP.


The DECT has both POTS and VOIP lines, the POTS is filtered with a
master socket filter.

--
Chris Green

  #10  
Old January 8th 20, 02:08 PM posted to uk.telecom.broadband
Graham J[_3_]
external usenet poster
 
Posts: 133
Default DECT and FTTC, any known issues?

Andy Burns wrote:
Graham J wrote:

I would anticipate problems where the DECT phone interferes with the
FTTC service


Why?* The DECT is just a POTS device, it's operating on the baseband
part of the line under 3000Hz, not on the broadband part ...


No, the DECT basestation transmits RF to communicate with the handsets.
Potentially this could interfere with the FTTC signal, but this is
unlikely because the frequencies are very different.

--
Graham J
 




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