Your drone's C2 on the priority voice channel.
VC2 carries command and control over the cellular voice bearer:
the QCI-1 priority class.
Every mobile network keeps that class available for calls.
So when the cell congests, that priority is why the VC2 link holds.
Simple
Fits the drone you already fly.
VC2 is the software that runs on the companion computer, controls the cellular modem, and connects the flight controller to your ground control station.
VC2 runs on the companion computer. Two ways to get it there.
VOX cellular C2 board
A companion computer with the modem and VC2 built in. Wire it to your flight controller and fly.
VC2 on your companion computer
Install VC2 on the companion computer you already run. It speaks MAVLink to your flight controller.
Stable
Why the link holds under load.
The voice bearer is a guaranteed-bit-rate (GBR) class, scheduled ahead of best-effort LTE data. Instead of bonding more best-effort links, the VC2 link holds even when the cell fills.
Scheduled first.
C2 rides the QCI-1 voice class, scheduled ahead of best-effort data when the cell is busy. Latency stays bounded under load.
Two paths in parallel.
VC2 carries C2 on the voice channel and the LTE data path at the same time. If one drops, the other is already carrying it.
Multi-modem redundancy.
A second VOX runs fully independent, with its own SIM, modem, power, and companion. Four parallel paths, no single point of failure.
OVER 400 HOURS FIELD-TESTED ON LIVE COMMERCIAL NETWORKS
Secure
The link stays yours.
A proprietary voice modulation, an outbound-only data plane, an encrypted data path.
Proprietary modulation.
C2 on the voice channel rides a proprietary modulation: data carried as audio, not a standard network protocol. An interceptor records sound, not the data traffic their tools expect.
Outbound only.
The drone reaches out to Voltela's servers. Nothing on the public internet reaches in to your drone. No inbound ports, no firewall holes.
Encrypted data path.
The data path runs over an encrypted Tailscale tunnel, built on WireGuard. No internet data moves between your drone and ground station outside it, and none is shared with third parties.
The voice-channel method originates in a foundational Fraunhofer patent by Voltela's founder (US11349623, part of an international patent family).
Voltela authored the validation and verification section of the cellular C2 MOPS in development
(EUROCAE ED-340 / RTCA DO-410).
Get VC2 on your drone.
VC2 is software. Two ways to run it.
Buy VOX.
Cellular C2 carrier board, VC2 preinstalled.
CE Marked, FCC SDoC, IC modular cert.
VC2 in your hardware.
Operating a MAVLink or custom flight controller? We integrate VC2 into your stack.
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