Would love an up to date photo, wanna see how much it pushes out from the UDM.
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While I’ve been redecorating the box room & running an extra CAT6 socket, I’ve had access to the floorboards so I’ve also run an SC/APC fibre through my walls & ceiling and moved my ONT into the server room (cupboard under the stairs 
)
Fingers crossed for an update from OP on their setup / choice of module 
If it does end up being the one linked earlier in the thread, there’s a custom variant which allows MAC & Serial designation without needing to SSH in and set them 
#LazyMode
Just not sure it’ll run at 2.5gbps on my UDM-SE’s SFP+ WAN port 
Don’t think OP is actually using the FS.com Module as there has been so many people who can’t get it to work (without being dropped/blacklisted from the network) so very very unlikely it all of a sudden works for one person.
You can buy one to test then if it doesn’t work just return it. I’ve had great success with FS.com kit before if that helps
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I’ve read some of the reviews and there’s mixed reports of it working on a multigig connection in tandem with a UDM 
But equally unifi community posts have pointed towards the SFP cages on the UDM being either 1 or 10G. No in-between 
2.5gb does work on the UDM but think it marks it as 10gb. But like I say I don’t see any proof that OP is using it. A lot of people have tried and failed either due to being dropped/bared from CityFibre.
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Why would it damage their network? or do they just not want the head ache of supporting a direct connection?
Less management possibility, potential to break the fibre I guess.
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It’s also probs about the support as well tbh. They own and are responsible for everything to/from and including the modem/ONT. If you remove the modem then technically it would void the support contract/warranty. Even extending the fibre without them doing it would be a breach of this contract/warranty as they can’t verify/guarantee the work. But who knows tbh maybe @Yayzi_Team can confirm?
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Its just a demarcation point.
The same as BT 21CN boxes in business.
The same as Virgin residential and business only allowing their routers to act in modem mode, superhub and the hitron units
They’ll support up to that point with their supplied equipment, otherwise it turns into the wild west and they’ll quickly lose control from a support/security point of view with millions of customers running different kit. Becomes an impossible challenge.
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That’s very true, standardise the hardware to support
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Do you have a link to anywhere which shows this? (I ask from a place of really wanting this to work without being the guinea pig myself 
)
That’s fair, we’ve not seen updated photos, etc. yet.
Ooo interesting 
I’ve not found posts about this on the yayzi forum, is there someone else with similar discussions? I’d love to check them out and see what sorta hurdles people are facing
In theory GPON is GPON. As long as ‘insert_module_here’ matches the power (dB) on the send/receive side of the optics it shouldn’t cause damage. But if overpowered/out of spec GPON modules are a thing then using one could easily wreak havoc on the various optical splitters & OLTs 
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Other than a purely cosmetic standpoint ( less cables and not having to use a plug socket for the ONT) there is very little to be gained. Its not going to increase throughput or decrease latency. The Calix’s are decent units, and believe provide management and telemetry.
A very grey area is if you cause disruption for potentially up to 32 of your neighbours on the same pon, are you liable? I’ve not seen anything official anywhere from CF to say it’s not allowed. But I also wouldnt want to go up against CF’s legal team if it were to cause disruption.
Without seeing something official from CF to say yes go ahead and use an SFP ONU - heres a compatible list, then personally the potential cons outweigh the pros - but each to their own.
I’ll wait for the ISPreview news article of the user who took down their street for a couple of days 
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I don’t, but I’m 99% sure because I’ve used an SFP+ 2.5Gb Ethernet module and it worked fine.
Take a look at places like Reddit a fair few people have said they get blocked from the network.
As per @Lee it’s a very dangerous area to be poking around in. Especially if the modules are over powered and burn the POP. Although they might have attenuators on the POP side. But this again is speculation 
I can already picture it:
Marcus: Plugs in the stick, plugs in the fibre.
Neighbours: WTF WHERES MY INTERNET GONE
But if you really really wanna try it then the FS.com one I mentioned before is the best bet for you as you can return it without problems if it doesn’t work. Or you can try a Nokia one, but I won’t go into these as they need to be flashed with openwrt.
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I’ve pulled the trigger & ordered a custom GPON SFP (This one 
)
Should arrive by the end of July, I’ve checked the transmit/receive power against the spec sheet of the Calix ONT and everything’s matching up nicely.
Fingers crossed for a smooth install and a lovely clean looking rack
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Let us know how it goes, was that the one I mentioned?
Oh god, i’ve missed a lot. This is what happens when i forget to check the forums 
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I’m not going to publically link the product, but i believe Aydan did.
You can clone the MAC and Serial itself, using SSH. Or you can order it preconfigured to your spec.
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As Nexus pointed out, i’m using the FS module.
Correct, it marks it as 10GB. I believe this is more of a bug though.
Management, yes. Breaking the fibre? never in a million years.
https://talk.yayzi.co.uk/t/virgin-media-vs-yayzi/1361/33?u=t9537
Exactly correct.
https://talk.yayzi.co.uk/t/virgin-media-vs-yayzi/1361/33?u=t9537
Yeah, and this is where it gets grey. T&C’s state you can’t even move their cables, router, etc etc. Can’t touch any of it. I don’t see any judge in the country upholding this as reasonable, what if i move house? Or want to paint the wall the ONT is mounted to, etc etc.
It’s not just support, it’s compliance and regulations. But yes, exactly.
I’m yet to see a single post from anyone being blacklisted from CityFibre’s network for using this sort of equipment, and i’ve searched Reddit high and low. I’d imagine a more likely approach is an email or letter to say “Hey, we know you’re doing this, please stop or we’ll terminate your connection”.
This is very well put. Maybe the most relevant part of all of this is that, on my street, i’m the only CityFibre customer. When they did my install they showed me the green cabinet and there was one single fibre cable, mine. So maybe that’s why there hasn’t been any issues yet?
Great! If you need any help or advice, give me a shout. That is the correct stick btw also, sorry it took me so long to reply to your DM.
https://talk.yayzi.co.uk/t/virgin-media-vs-yayzi/1361/43?u=t9537
For me, it wasn’t cable mess or anything like that. It was the ONT taking up another ethernet port and power socket, and the fact i’ve ran fibre to my computer. It’s nice to be able to say i have a 100% fibre connection to the internet. My setup has no copper (Excluding the obvious products in my house using ethernet for example).
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