Emergency Communication & Ad Hoc Mesh
Major disasters such as floods, earthquakes and forest fires are often accompanied by power, network and road interruptions, making communication assurance extremely difficult. Caltta's emergency communication solution adopts a design philosophy of layered deployment, flexible access and elastic expansion, converging portable/vehicle-mounted base stations, broadband & narrowband Ad Hoc mesh, UAV aerial platforms and satellite backhaul to establish an independent command network in minutes where no infrastructure exists.
Caltta is the only vendor providing both DMR and LTE trunking solutions. DMR, LTE, PoC and Ad Hoc can be flexibly deployed with mixed grouping and mixed calls; frontline iCS and backend iDS converge for unified command. In 2024, Caltta became one of the biggest winners of China's National Emergency Communication Project, with over 40% market share.
3D Emergency Communication Network
An "air-ground-space" 3D network delivering multi-tiered connectivity between frontline and backend, with full-dimension dispatch — voice, video, message, data and location:
HQ Command Center Emergency Integrated Dispatch System (iDS) · Fiber / carrier network backhaul
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Backbone Node (Ground / Air) Tethered UAV · Satellite (KU/BeiDou) · Broadband & narrowband Ad Hoc backbone links
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Frontline Combat Node Portable BS · Backpack Ad Hoc · DMR/LTE/multi-mode radios · Robot dog / robots
Solution Highlights
Rapid Deployment
- One-key power-on, network in 5 minutes
- For daily drills and emergency rescue
- Portable, lightweight, single-person carriable
Public-Private / Fixed-Mobile
- Converged public and private networking
- Fixed and mobile device collaboration
- DMR+LTE+PoC multi-mode terminals
Independent & Robust
- Broadband & narrowband Ad Hoc, independent and reliable
- Central-less, self-healing, anti-destruction
- Adapts to extreme, complex emergency scenarios
Unified Command
- Frontline iCS + backend iDS convergence
- Multi-level interconnected command & dispatch
- Integrated voice / video / data
Ad Hoc Mesh Networking
Ad Hoc mesh provides long-distance wireless communication in harsh environments without relying on external networks or infrastructure. It supports chain, star, tree, mesh and hybrid dynamic topologies with nodes dynamically added or removed, up to 32 hops (narrowband) / 64 nodes (broadband), with powerful self-healing and anti-destruction capabilities.
DMR Narrowband Ad Hoc (SmartLink)
- SmartLink580
Fixed, 3.2kg, 1–25W, needs only one pair of 12.5kHz, for stationary scenarios - SmartLink600
Portable, 4.4kg, 236Wh battery, one-minute self-networking, LTE/satellite backup link - SmartLink780
Dual-channel, 7kg, 2×25W, backpack deployment - SmartLink300
Airborne, 450g, UAV-mounted aerial networking
Broadband Ad Hoc (sMesh)
- sMesh750/100/720/150/390
450g–6kg multi-form, from handheld to vehicle/airborne - Configuration-free one-click start, network in seconds
- Real-time frequency scanning, auto-selects optimal frequency
- Up to 64 nodes, >95Mbps, latency <10ms
Portable Emergency Equipment
Portable Base Stations
- ZXSDR BS8700M
Portable DMR base station, 40W, -125dBm sensitivity, IP68 - TBS6000M
Portable DMR base station, built-in public backhaul, network in one minute, IP67 - P300
LTE manpack system, <10kg, working in 5 minutes, IP67
Command & Mobile Platforms
- iCS C500a / iCS 500a
Portable triple-screen command case, 3h built-in battery, multi-system access - Emergency Command Vehicle (ECV)
Multi-brand chassis, high mobility, fast deployment, large capacity - UAV Platforms
Tethered/rotor/fixed-wing, image backhaul, aerial networking, long endurance - Satellite Terminals
Tiantong/maritime/Starlink satellite backhaul
Benchmark Cases
National Forest Fire Bureau Ad Hoc Network
600+ DMR Ad Hoc sites, 6,000+ ultra-short-wave radios and mobiles, standard DMR Ad Hoc technology with cross-brand interoperability, IP67 — solving communication assurance in forest areas.
Chongqing Land-Air-Space Emergency Network
550 mesh sites (sMesh750/100/150), configuration-free second-level networking, covering geological hazards, flooding, forest fires and reservoir zones.
Vodafone Turkey Tower Maintenance
Dozens of narrowband Ad Hoc sites for a multinational operator across Istanbul and surrounding mountains, providing temporary coverage during tower maintenance, speeding fault repair and cutting deployment cost.
Yunnan Elephant Migration Coverage
SmartLink600 quickly established an Ad Hoc wireless network; DMR Ad Hoc integrated with eChat for unified dispatch, ensuring 24-hour uninterrupted communication in forests without public coverage.
Typical Application Scenarios
Forest Fire / Rescue
Flood / Earthquake Relief
Tunnel / Underground
Road / River Linear Coverage
Energy Exploration / Field Work
Tower Maintenance / Patrol
