This topic

Digital Voice Backup Battery

quarkrad — Sat, 19 Feb 2022 12:02:30 GMT

I have managed to delay my switch over to Digital Voice until I can be provided with a battery backup. This is because my wife is vulnerable and in the event of a non medial emergency I need to contact neighbours for help. (I have no mobile signal so cannot use that medium). We had a power cut yesterday due to storm Eunice and a number of neighbours visited me to use my analogue phone(!). Some time ago I wired up a battery backup to the BT router for one of my neighbours who is in their 80s and at times needs help (BT supplied her with the battery backup device). When we had the power cut yesterday I phoned this neighbour to make sure their battery backup was working. To my surprise her battery backup did not work in terms of her being able to make or receives calls - I had to use my analogue phone to call her daughter. The battery backup did work in that the router was powered and lit up - but it was flashing purple. As I wired this up I was intrigued and soon realised that the reason this 'backup system' was never going to work is because the fibre/broadband terminal box that the router is wired to is itself mains powered. So .... in the event of a power cut the router is powered by the backup battery, but has no broadband connectivity because the incoming terminal box is not powered. Hmm....

I might be missing something here but the battery backup box is a simple device having a connection into the routers mains input - there is no way it can also power the terminal box. There may be other models but this was the device sent to my neighbour and presumably BT were aware of the 'set-up'. Are there other models of backup battery or have I got this all wrong? (Power is restored today and I tested the router/terminal box in my own house. Obviously when I powered down the terminal box the router started flashing purple because it lost its network connection. So I cannot see how the backup backup can possibly work in terms of being able to make and receive calls when it only powers the router).

Re: Digital Voice Backup Battery

jac_95 — Sat, 19 Feb 2022 12:04:00 GMT

Hi quarkrad

📢BT's Digital Voice service is BT Consumer's VoIP/Internet based fixed line voice service and is the replacement service to your current voice service you have today as the analogue PSTN phone network is closing by 2025. Between 2021 and 2025 those with a voice service from BT will be migrated onto the Digital Voice Service.

ℹ️ Please take a look at the FAQs on moving to Digital Voice as it may help answer your question.

✅ You may also find that someone else has had the same query in the past. Here's a list of all the answered questions regarding BT's Digital Voice.

Please do post back if you've been able to find the answer to your question(s) or if you need more help from the community.

p.s This is an automated reply

Re: Digital Voice Backup Battery

quarkrad — Sat, 19 Feb 2022 12:35:46 GMT

??????? Hopefully some help may be following

Re: Digital Voice Backup Battery

-Richie- — Sat, 19 Feb 2022 13:02:36 GMT

It depends on how the broadband is delivered, anything that requires power would need a backup unit.

If you have Fibre to the cabinet (FTTC) the broadband comes through the master socket, this means the battery backup unit (BBU) needs to keep the Smart Hub 2 powered.

If you have Fibre to the premises (FTTP) the broadband comes from the ONT, this means the battery backup unit (BBU) needs to keep the ONT and the Smart Hub 2 powered.

Any phones that need electricity would also need a backup, I would also advise contacting your energy provider, they willl prioritise vulnerable customers during a power cut.
Mobile networks also allow sharing when it comes to emergency calls to 999, you would only need a signal from 1 of the 4 mobile networks to make a 999 call, even if your mobile provider has no coverage.

Re: Digital Voice Backup Battery

quarkrad — Sat, 19 Feb 2022 14:44:21 GMT

I've been through this ring 999 loop before with my MP - thank you for your suggestion. Looks like I'm going to have to contact my MP, Ofcom and BT CEO again - as on the surface it appears BT does not have a solution to forcing customers into vulnerable situations in the event of power cuts when making them switch to Digital Voice. I will get a definitive statement from BT's CEO about ringing 999 for non medical help before going back again to my MP. Thank you.

Re: Digital Voice Backup Battery

-Richie- — Sat, 19 Feb 2022 15:28:09 GMT

@quarkradwrote:
Looks like I'm going to have to contact my MP, Ofcom and BT CEO again

Why ? You said BT have delayed your account, this is another customer you're discussing, if that person meets the criteria BT will provide a BBU free of charge which they already have.

This has already been discussed and agreed with the regulator Ofcom, you can read more at :

https://www.ofcom.org.uk/__data/assets/pdf_file/0032/137966/future-fixed-telephone-services.pdf

https://www.ofcom.org.uk/__data/assets/pdf_file/0016/123118/guidance-emergency-access-power-cut.pdf

Re: Digital Voice Backup Battery

FTT — Sun, 20 Feb 2022 06:16:02 GMT

Something like this will cover all your needs:

When I say 'all' I mean most eventualities.

I do think truly rural areas (a few in Scotland had no power for 8 days a few weeks back which is unacceptable) need to have some sort of backup for themselves (ie a generator) but also something supplied by councils/government maybe in a local shop like a satellite mobile telephone.

I have a backup myself for my FTTP and if I lived in a rural place I'd also have a generator or two.

I wouldn't bother my MP it's up to all of us to do as much as possible for ourselves and if people really can't cope then century old technology (which needs electricty somewhere and intact cabling) copper line isn't going to provide for any miracles.

People need to be prepared and those who won't will just have to suck it up and those we can't will need statutory intervention by local authorities at some stage. Nothing new there.

Re: Digital Voice Backup Battery

FMcA — Sun, 19 Feb 2023 14:09:25 GMT

Thanks for this. I am in the same position as the person you were assisting ... I'm just getting fixed up with full fibre broadband and with a vulnerable adult that resides at home.

You've helpfully confirmed what I had gleaned thus far and I'm thinking of putting a small UPS device to support the surge protected short extension lead I already use to facilitate the OTM and SmartHub2 i.e. battery for the critical comms kit - if that works I can always add a larger capacity battery and/or similar devices to the hybrid connect & extension discs ..... see how the journey goes!

I do have good mobile signal at the property but if the cell tower is jammed up with calls or the vulnerable person didn't charge the phone - again 🙂 .... then the backup may well be needed at some point. It wouldn't be the first time.

Re: Digital Voice Backup Battery

davidr5 — Tue, 21 Feb 2023 10:40:42 GMT

I'm in a similar situation. I have just moved back to BT from NOW Broadband and am on Digital Voice.

I'm concerned about a power failure too, as although I have a mobile signal, the coverage is patchy and the mast is so congested sometimes, it is not reliable.

I contacted the Loyalty and Faults teams, but both are saying I would have to pay £85 for the BBU.

I live alone and have autism and so I would like the BBU for peace of mind and to avoid going into a meltdown should a power cut arise. I guess I probably don't fit the BT criteria of a vulnerable customer and I guess they see that theoretically, I should have a mobile signal at my location so would have to pay.

Re: Digital Voice Backup Battery

AndyJD — Thu, 02 Mar 2023 21:15:22 GMT

Some interesting info here on why BT paused the DV rollout and some potential new solutions like hybrid phones which switch to mobile networks during a power cut, I haven’t seen anything like this for sale yet though.
https://www.ispreview.co.uk/index.php/2022/12/isp-bt-to-restart-troubled-uk-digital-voice-rollout-in-spring-2023.html#:~:text=Broadband%20provider%20BT%20has%20issued,outages%20during%20power%20cuts%20etc.

Re: Digital Voice Backup Battery

FMcA — Fri, 03 Mar 2023 05:46:04 GMT

Thanks for sharing this .... interesting.

Re: Digital Voice Backup Battery

FMcA — Fri, 03 Mar 2023 06:00:27 GMT

Hi again...

I've added the UPS 'backup boxes' now (two actually .... router/phone location & another for hybrid connect/discs, iMac etc) and they work a treat; I ever noticed the switch into battery and everything I'd connected worked. I've used an APC product from Broadbandbuyer ... the larger capacity units need a fan the low noise from which may or may not be an issue depending on the location. The smaller ones are silent and will last a few hours supplying the comms kit only.

Re: Digital Voice Backup Battery

ChrisGee — Thu, 08 Feb 2024 15:12:41 GMT

@FTT You’re all heart mate. No need for all the sugar coating, just tell it like it is.

Re: Digital Voice Backup Battery

wboyle — Sun, 17 Mar 2024 16:42:56 GMT

Above answer down not address the issue. What is needed if a technical fix to assure telephone comunication through a power blackout as given by the previous analogue service. The answer is surely a better backed up digital phone, modem and router so the communications line twisted pair or optical fibre can be driven from the customer end. The phone could be the cutsomers old phone again powered by the battery system and digitised for the internet connection. Its not rocket science and the market is definitely big enough to warrant the design.

Re: Digital Voice Backup Battery

wboyle — Sun, 17 Mar 2024 16:45:38 GMT

Local telephone broadband masted often go down in a power outage leaving no mobile signal.

Re: Digital Voice Backup Battery

chrisjp — Sun, 17 Mar 2024 17:23:37 GMT

"What is needed if a technical fix to assure telephone comunication through a power blackout as given by the previous analogue service. The answer is surely a better backed up digital phone, modem and router so the communications line twisted pair or optical fibre can be driven from the customer end."

The analogue phone system has its backup power supplied from batteries or generators at the telephone exchanges and this travels via the copper wires from the exchanges to every house . That's why analogue phones are not dependent on mains electricity.
With digital voice however, both the broadband and telephone signals travel over fibre optic cables to at least the local roadside cabinet (FTTC) or all the way to individual houses (FTTP). So there is no way back up power can continue to travel from the exchanges to individual houses, because fibre optic cables do not conduct electricity.
That's why the only way to provide backup power for routers is for each household that wants this backup to provide some sort of battery backup system that is located in the house. These backup devices are already available and, in some cases are being supplied free to BT's customers.
So I don't understand what else you are asking to be done.

Re: Digital Voice Backup Battery

Wifidan — Fri, 12 Apr 2024 16:11:54 GMT

All suppliers that have switched to DIGITAL VOICE offer EBUL - EMERGENCY BACK-UP LINE. The Motorola fw500. This is a hybrid phone that has a SIM card also installed aswell as a rechargeable battery. It connects to the hub like a normal phone (some comes with a splitter) to plug in this phone plus your normal phone you use. When the power or broadband fails the phone switches over to line fault mode AND THEN AUTOMATICALLY RUNS ON THE SIM CARD (it's an iot SIM that roams all networks for the strongest) the phone also has built in battery backup.

BT are the only provider to also offer a battery backup unit. Wich there are 2 versions!

Version 1 -is for FTTC connections and is one unit to backup the BT smart hub meaning it stays connected in a power cut, however only an analogue phone would work not a phone that needs power.

Version 2 -is for FTTP customers and comes as a bundle, it comes with two units. One for the hub and one for the fibre modem.

Choosing the FTTC option yet having a FTTP connection will not work as the hub will stay on but not the fibre modem.