Ancestors

Written by Alex Willmer on 2024-09-23 at 18:37

Electromagnetic Field 2024 videos are avaialable https://media.ccc.de/b/conferences/emf/2024 That's my Monday evening sorted #EMFCamp

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Toot

Written by Alex Willmer on 2024-09-23 at 18:47

The media.ccc.de frontend is open source https://github.com/voc/voctoweb I don't think it has keyboard shortcuts for playback speed (e.g. Shift+, slower; Shift +. faster). I should check further, may try submitting a PR.

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Descendants

Written by Alex Willmer on 2024-09-23 at 19:04

OMG. UK fibre optic broadband isn't 1 customer router to 1 upstream tranceiver/port. The cabinets contain 64 way passive optical splitters, so a single tranceiver at the exchange (or a street cabinet) can service upto 64 homes. https://media.ccc.de/v/emf2024-305-the-last-miles-of-the-internet#t=1020

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Written by Attie Grande on 2024-09-23 at 22:35

@alex The splitters can actually be anywhere! Cabinet, pole, chamber/pit, on-premises, etc..

I also thought there was potential for more than 64x ONTs on a single OLT, but I may be wrong on that one.

https://www.fs.com/uk/products/11521.html?now_cid=1017

https://www.fs.com/uk/products/11620.html?now_cid=1017

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Written by Attie Grande on 2024-09-23 at 22:37

@alex The other cool thing about GPON, is that the entire "modem" bit can fit into an SFP!

This one is somewhat hackable, and interfaces between the GPON network and a standard SFP port on a switch or media converter - it's got a Linux system inside for management.

https://www.fs.com/uk/products/133619.html

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Written by Alex Willmer on 2024-09-24 at 00:38

@attie 64 was the maximum quoted for a single splitter, and a rough limit given the typical distances and dBm budget in the UK

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Written by Anton Piatek on 2024-09-24 at 08:18

@alex thanks, fascinating talk!

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