Your 4G/5G backup probably does not protect you
This page describes a backup that switches over. The article explains how to check it yourself, rather than finding out on the day of the outage.
Read: testing your 4G/5G backup
B2B Telecoms — the standard, not the option
4G/5G backup link: how a connection is secured.
Many operators offer 4G/5G backup, as an option, at the bottom of the quote. With us, a connection delivered is a connection with backup.
- Switchover in a few seconds
- Automatic return to the fibre
- Scope written before signing
4G/5G backup on standby
Why it is standard with us
A connection with only one path
A connection with only one path
is not a professional connection.
Your fibre will go down one day. And the outage is counted in hours, not in minutes.
The till freezes
Payments no longer synchronise. The queue grows in front of the screen.
The payment is declined
The terminal can no longer reach its authorisation centre. The customer pays somewhere else.
The switchboard is silent
Telephony goes through the same link. Your customers think you are closed.
The bookings stop
Hotel software, planning, booking channels: no more arrivals recorded.
The second path
The fibre stops.
The fibre stops.
The traffic, meanwhile, carries on.
A 4G or 5G radio connection is on standby at all times, with its own aerial. The cable is severed: the till still takes payments, the switchboard still rings.
How a connection is secured
Two paths,
Two paths,
never just one.
No human decision in the loop, and nothing to reconfigure at your premises: only the outbound path changes.
1 · Monitoring of real traffic
The router does not look at whether the port is lit: it tests whether traffic is getting through.
2 · The switchover, in a few seconds
Traffic leaves over the airwaves. A call in progress may be cut off, then dialled straight back. Everything else resumes on its own.
3 · The return, just as automatic
The router waits until the fibre is clearly stable before bringing the traffic back to it.
The table nobody publishes
What is covered,
What is covered,
and what is not.
A disappointed customer on the day of the outage costs more than a customer who knew what to expect.
| Situation | The backup takes over | What you need to know |
|---|---|---|
| Fibre cut on the last mile | Yes | The main case: cable cut, street cabinet damaged, an error during works. |
| Failure of the access operator’s network | Yes | The radio path uses different infrastructure: the upstream incident does not reach it. |
| Fibre connected but traffic blocked | Yes | A line that is lit but dead triggers the switchover. |
| Failure of the site’s access router | Yes, with conditions | If the backup is carried by a separate piece of equipment — offered on sensitive sites. |
| Power cut at the site | No, unless there is a UPS | No network solution works without power. We always price a UPS, and we state the expected runtime. |
| Area with no usable mobile coverage | No | We measure the coverage on site before selling. If it is not sufficient, we say so and we look for another route. |
| Speed identical to the fibre during the switchover | No | It holds up the critical uses, it does not reproduce a gigabit. A controlled degraded mode, not a clone. |
| Internal fault on your local network | Not by itself | The problem is then downstream of the backup. So we also deal with the local network. |
| Outage of a third-party online service | No | If your business software or its hosting provider goes down, no link can do anything about it. |
Our rule: the quote says what is covered, and also what is not — written before signing, not discovered on the day of the incident.
200 +
projects delivered, from the telecoms link to the AI agent
100 %
of data hosted in France, with no offshore subcontracting
50 +
experts: telecoms and network engineers and technicians, developers
24/7
proactive monitoring of your links and your network
The link in the chain nobody ever talks about
Securing your site is no use
Securing your site is no use
if the upstream network is fragile
If the network that then carries your traffic is not redundant, the breaking point has simply moved a hundred metres.
- Redundancy by design: every critical element has its double, no single point of failure.
- Your traffic goes over our backbone — the long-distance network that links our points of presence.
- Continuous, proactive monitoring. The incident is often dealt with before you call.
- Our services rely on ISO 27001 and HDS certified data centres located in France.
We do not talk about it as a feat: it is the foundation. Arcep operator identifier: SKBS.
Who it matters most for
Some businesses can wait.
Some businesses can wait.
Others lose by the minute.
Hospitality, retail and catering, regulated professions, industrial sites : an hour without a network cannot be made up. Alarms and access control systems moved to IP depend on it too — copper timetable.
The implementation
Five steps, and a test in front of you.
We listen
What stops at your premises when the line goes down.
We measure
Mobile coverage on the spot, at the exact place where the antenna will be installed.
We write
The scope: what is covered, what is not, and the price. One page.
We install
Then we unplug the fibre in front of you to check the switchover.
We monitor
We see the incident, often before you do.
Sizing
A badly sized backup
A badly sized backup
saturates in three minutes.
We work with Accor and Logis Hôtels hotels. They trust us.
Request a free assessment
The setting
What we configure,
What we configure,
in practice.
A backup that has never been tested is not a backup: the light is green, and nothing switches over.
- Prioritisation of critical traffic: payment, telephony and business software before everything else.
- Secondary uses put on hold: downloads, backups and updates wait for the fibre.
- Alert raised at every switchover, to our monitoring and to you.
The technologies we deploy
FTTO fibreFTTH fibre4G/5G backup
SIP trunkIP CentrexSD-WANHigh-density WiFi
Frequently asked questions
What we are asked
Can 4G/5G backup replace my fibre?
No, and you should not want it to be. It is a second path, sized to hold up your critical uses for the duration of the outage. A site that lives permanently on its backup has a problem with its main connection, to be dealt with at the root.
Does the backup work for telephony too?
Yes. Your switchboard goes through the same internet connection: as soon as the traffic goes over the radio, the calls go with it.
A single point of contact
The link, the router,
The link, the router,
the switchboard and the backup.
We operate your link under our own operator identifier. The person who sizes the backup monitors it — and answers when you call.
Going further
Two reads before choosing.
Shared or dedicated fibre: speed is not the question
The backup is the second path. The article says what really distinguishes the first one, beyond the advertised speed.
Read: choosing between shared and dedicated fibreHow much does
an hour with no network cost you?
After a visit, we size the backup at your premises — speeds, priorities, UPS — and the exact scope, covered and not covered, is written down before signature.