[GLLUG] Downside of FTTP

[Christopher Hunter]

On 04/12/2019 16:24, Chris Bell via GLLUG wrote:
> On Wednesday, 4 December 2019 16:07:25 GMT you wrote:
>> On Wed, 4 Dec 2019, 15:50 Chris Bell via GLLUG, <gllug at mailman.lug.org.uk>
>>
>> wrote:
>>> Hello,
>>> Someone has posted a message on a local forum that his Redcare link to ADT
>>> was
>>> cut without any warning from BT when he was re-connected by FTTP.
>>> ADT have offered an upgrade for £1,711.
>>> --
>> Hi,
>>
>> Do you have a link to the forum?
>> A quick google of "Redcare link to ADT", says it is a GSM link, so should
>> not even touch the FTTP.
>> I don't have Redcare or FTTP, as I use alternatives, so I don't really know
>> how Redcare connects.
>>
>> Kind Regards
>>
>> James
> I think that Redcare may run over a standard line in a similar way to ADSL. A
> local company had several telephone lines, with ADSL on one and Redcare on
> another. Unfortunately the company did not which line carried which service,
> so there was confusion every time there was a line fault, with the BT engineer
> only sent to fix a fault on a particular (wrong) line and unwilling to touch
> anything else.
>
I can confirm that Redcare was conveyed over ordinary PSTN lines as 
short, noisy data bursts.  These were so large that they would cause 
induced interference to adjacent lines, wreaking havoc with Fax 
transmissions and putting bursts of horrible noise into the ears of 
unsuspecting subscribers!  Businesses that I know who had Redcare 
installations reported that it was largely useless - burglar and even 
fire alarms would frequently be ignored!

Chris H