Re: Grand Apagon - Electricity (not) in Spain

On 06/05/2025 11:26, Carlos E.R. wrote:

On 2025-05-06 11:25, Martin Brown wrote:
 

Amazingly fibre to premises can still work OK in a power cut since that is actually powered off the reserve supply back at the main exchange.
Advantages of having a UPS at home.

 Here there are boxes on the walls of the city blocks, where one fibre from the exchange is divided into half a dozen (exact number unknown to me). I don't know if these boxes are passive or active.
 <https://www.google.com/imgres?q=cajas%20de%20reparto%20de%20fibra%20telefonica&imgurl=https%3A%2F%2Fcomunidad.movistar.es%2Ft5%2Fimage%2Fserverpage%2Fimage-id%2F111764iC1F6FAD7948695D6%3Fv%3Dv2&imgrefurl=https%3A%2F%2Fcomunidad.movistar.es%2Ft5%2FSoporte-Fibra-y-ADSL%2FINSTALACION-CAJA-DISTRIBUIDORA-DE-FIBRA-EN-EXTERIOR-DEL-EDIFICIO%2Ftd-p%2F2929655&docid=zZHuHCpt8An46M&tbnid=0T2mKKO1TLeZFM&vet=12ahUKEwiN9onmz46NAxXYVqQEHYnHDk4QM3oECHMQAA..i&w=914&h=611&hcb=2&ved=2ahUKEwiN9onmz46NAxXYVqQEHYnHDk4QM3oECHMQAA>
 <https://www.change.org/p/movistar-cambien-cto-caja-donde-se-conecta-la-fibra-optica-para-poder-realizar-mis-estudios>

Your splitter boxes look to me like they might be powered.
The ones in the UK look to be entirely passive optical connectors taking in about 8 consumer fibres each down to one exchange fibre. They sit in places with no mains power. You have to look quite hard to tell them apart from the ones used for copper circuits. Many fibre to premises drop lines actually use a dual copper and fibre line in a figure of 8 so you can tell who has a fibre circuit by looking at the line if it is above ground. It looks like a whirly gig with a profile -=--=--=--=--
The rural ones look a bit like a black plastic policeman's helmet with one line in and 8 lines out.

I could not test if my landline phone worked during the outage because my local UPS went down too soon.

Fibre stayed good through our powercut for as long as the UPS lasted.
--
Martin Brown