Full Fibre and Phones - Simple issues that seed sorting.

[#1]

@RobPN

So, to be clear, are you saying that with an Openreach FTTP installation, there is no active equipment at all between the ONT in the home and the Internet Head End, and can I assume that the Head End will benefit from the back up batteries and diesel generators that I remember from my days of working in a telephone exchange?

I like the idea of the hand generator, but would I experience buffering on streaming video if I wasn't winding it quickly enough? 😀

Also, do you happen to know what the power requirements of the Openreach ONT are please? (Voltage and amps/watts).

I have an old Jump Starter/Compressor for the car where the compressor seized years ago, but its internal 17.2Ah 12 volt sealed lead acid battery is still good.

The spec on the Hub2 power supply says 12 volts @ 18 watts, (so 1.5 amps maximum), so in theory I could use the battery to float across the Hub's power input and it would power it during a mains failure for about 11 hours.

If the ONT also requires a 12 volt supply, then I could use the same method to back that up as well - but obviously for less time overall.

TIA

[#2]

I believe that the rated consumption of a Hub 2 is 10W. I measured mine over several weeks and it averaged 9.5 W. That included the mains power supply brick.

[#3]

@Baldrick1 Thanks.

I have read on the BT customer forums that the User Guide for their SmartHub2, which is very similar to the Plusnet Hub2, says that it is: "8.48 Watts Idle,  14.08 Watts On".

Someone on there has done some comprehensive testing of this, and posted the results:

https://bt-digital-voice.blogspot.com/p/bt-smart-hub-2.html

Does anyone have the power requirements for the Openreach ONT please? I've not had any success with web searches.

I have found this for CityFibre's, (the only FTTP currently available to me, and for the next few years), ONT:

Input voltage: 12 VDC (nominal), 10 VDC (min.), 15 VDC (max)
External Power Adapter: 12 VDC, 1.5 A Typical 
Power: 5 W, Peak Power: 7 W

Hopefully Openreach's is similar?

[#4]

Detailed specs for all the Openreach ONTs can be found in SIN 506.

The single port Nokia ones power consumption are 2.5w

[#5]

@MisterW Thanks.

The SINs - that takes me back! (Statutory Information Notices?)

I see in that document that there are actually 12 different types of ONT, with power consumptions of up to 10 watts. Is the one that you quoted the one that is normally used for domestic FTTP installations?

All 12 volts though, which is the most important thing for my battery backup idea!

[#6]

That's certainly what I had installed last year. The single port one replaced the original 4 port Huawei one. 

[#7]

@MisterW Thanks

Great, so all I need now is a FTTP service! Whist CityFibre has been available to me for a couple of years, it looks as if I might have to wait until 2025 for Openreach to get to me. 😞 (I'd much rather stay with Plusnet, or move back to BT than go with one of the others).

https://www.openreach.com/fibre-broadband/where-when-building-ultrafast-full-fibre-broadband

I don't actually need anything faster than our existing 80/20 FTTC service, (which syncs at the full speed), but I'm concerned that once we are forced to have the home landline via the broadband, we will be at the mercy of the batteries in the FTTC and mobile mast cabinets.

Two of my family have serious long-term medical conditions, so not being able to call for help is a big concern for me.

However, the responses in this thread have given me confidence that with an Openreach, (at least), FTTP service, the solution to that is in my hands. 😀

Apologies to the OP, (@Davey76), for taking over their thread!

[#8]

Mr. Paul,

No need to apologize at all. It sounds as if I opened a can of worms. I think what the subject has highlighted though is that there are folk who are in the position of being concerned about the future, without getting the re-assurance they need from ISPs. Here City Fibre installed their full fibre infrastructure about 2 to 3 years ago (They promote Vodafone) and BT followed around 18 months later. . However Plusnet did not put in their offering using the BT (or should I say Openreach) infrastructure until a month or two back. I note that there has been mention of power cuts etc. in the responses and the effect on full fibre, and realistically I think the only option is to have a mobile as a backup. We use cordless phones at the present but have an old plug in and go thingy to mitigate issues in this regard. That resource will obviously go at the end of POTS. In answer to my original question at the moment we have a sort of plan workaround - that is not totally satisfactory. In the absence of VOIP (or Digital Voice as BT would have it), we have iPhones and iPads. Fortunately you can make calls on either floor with the iPad or Phone. This means we could have an interconnected comms on both floors at the same time. However this would go down in the event of wi-fi loss.