Short answer
Yes, when designed for it. A UPS-backed Peplink router bonding fibre with LTE/5G keeps voice, video, payments and ERP running when power or fibre drops, because the LTE share of traffic simply grows while fibre is down and users typically do not notice the switch.
In detail
What makes the design work:
- Power: the router is UPS-backed, and power and UPS sizing is part of FirstNet's per-site survey.
- Links: fibre plus LTE/5G, selected for carrier and technology diversity, with satellite or microwave added where needed.
- Data: FirstNet sizes the LTE data pool against expected failover hours.
- Visibility: InControl 2 alerts show when failover was active and for how long.
- Sessions: sub-second hot failover keeps active calls and RDP sessions running.
Load-shedding can affect network equipment beyond your premises too. LTE/5G is not affected by fibre cuts or cable theft, but mobile towers can suffer power outages, which is why bonding two different media, with a UPS at your site, gives better resilience than relying on either alone.
For extra independence at critical or remote sites, LEO satellite can be bonded in as a path that does not rely on terrestrial fibre or mobile towers.
Source: FirstNet Bonded Connectivity with Peplink service page →
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