PTT & Bridge
Every Device. Every Protocol. One Network.
Push-to-talk voice that works without cell towers. Bridge communications that connect mesh, radio, satellite, and internet into a single unified network.
Walkie-Talkie. Reinvented.
One tap to talk. Crystal-clear Opus audio over mesh, WiFi, or internet. No infrastructure needed.
Four Protocols. One Hub.
A single bridge node translates between mesh, internet, radio, and satellite — connecting every communication protocol in real time.
Node
How Bridge Works
Real-world scenarios where bridge nodes connect the disconnected.
Off-Grid to Home
A group hiking off-grid sends a message via mesh. One team member with a satellite phone acts as a bridge, relaying updates to family back home via internet. No one needs cell service — one connected device bridges the entire group.
Radio Meets Mesh
A HAM radio operator connects their radio to Trellis via the audio bridge. Their broadcasts reach every mesh device within range. Mesh responses are transmitted back over radio frequencies — two worlds, one conversation.
Universal Relay
An emergency rescue team uses a satellite communicator bridged through Trellis. Their messages reach mesh users, internet users, and radio operators simultaneously. One transmission, every protocol.
Voice Features
Everything you need for reliable voice communication in any environment.
Channels
Create public or private voice channels. Assign channels by team, location, or purpose. Switch instantly between channels during operations.
Opus Codec
Crystal-clear voice even at extremely low bandwidth. The Opus codec is optimized for mesh networking's constrained, variable-throughput environment.
VOX Mode
Voice-activated transmission. Start talking and PTT activates automatically. Hands-free operation for situations where you cannot touch your device.
Encrypted Voice
Every voice packet is encrypted end-to-end using AES-256. No plaintext audio ever touches the network. Your conversations stay yours.
Multi-Hop Voice
Voice relays through mesh hops just like messages. Talk to someone 8 hops away as clearly as if they were next to you. Range extends with every peer.
Replay & History
Missed a transmission? Voice messages are stored locally on your device. Replay any message from any channel at any time.
Bridge Protocol Specs
Every protocol, every connection path, every performance metric.
| Protocol | Connection | Details |
|---|---|---|
| Mesh Bridge | BLE + WiFi Direct ↔ Internet | Any internet-connected device bridges the entire mesh to the cloud |
| Radio Bridge | 3.5mm / Bluetooth ↔ Mesh | Audio jack or Bluetooth connection to HAM, GMRS, and FRS radios |
| Satellite Bridge | Bluetooth ↔ Mesh | Garmin inReach, SPOT, Iridium satellite communicators via Bluetooth |
| Internet Bridge | WebSocket ↔ Mesh | Real-time bidirectional WebSocket relay to mesh network |
| Voice Latency | < 100ms | Sub-100ms for direct PTT voice over mesh |
| Bridge Latency | < 500ms | Sub-500ms for cross-protocol bridged messages |
| Audio Codec | Opus 16kHz | 24kbps default, configurable from 8kbps to 48kbps |
Built for the Field
From search and rescue to event security — PTT and Bridge deliver where traditional comms fail.
Search & Rescue
Ground teams on mesh, air support on radio, command center on internet — all connected through one Trellis bridge. Every unit hears every update, regardless of their equipment.
Event Security
Security teams use PTT for instant coordination across venue sectors. Bridge connects to operations center for real-time oversight and rapid incident response.
Remote Field Work
Oil rigs, mining operations, remote construction sites — PTT replaces expensive radio infrastructure. Bridge connects isolated teams to headquarters over satellite or internet.
Connect Every Protocol. Reach Every Person.
Download Trellis and turn your device into a multi-protocol communications hub.