Reliable Communication for Crew and External Radios in Tactical Conditions
OPTOKON OEDX-20 is a digital intercom system specially designed for armored vehicles, military platforms, and special-purpose transport operating in harsh environments.
The system provides reliable, continuous voice communication between crew members (up to 9 users), as well as integration with external radios, creating a unified communication network inside the vehicle.
Thanks to its modular architecture, the system can be easily adapted to various types of vehicle platforms—from light patrol vehicles to heavy armored equipment.
Main Features:
- Up to 9 users simultaneously (modular structure)
- High-quality digital audio signal
- Full-duplex communication between crew members
- Integration with external radios
- Commander Control Unit (CUU) with transmission priority
- Supports headsets, external loudspeakers, and tank helmets
- Rugged housing — resistant to vibration, dust, and moisture
- Flexible connection via MIL connectors (D38999)
- Power supply: 18–32 V DC (nominal 24 V DC)
- Temperature range: -40…+70 °C
- NATO Supplier Code: 1583G
- OEDX-20 System Architecture
The system consists of separate modules connected into a unified communication network:
| Component | Description |
| Main Unit (MU) | The central communication block that coordinates all user and radio connections. Provides power distribution and audio signal exchange between modules. |
| Commander Control Unit (CUU) | The commander’s control module. Allows managing the entire system, provides commander priority, and includes radio authorization (Push-to-Talk Control). |
| User Unit (UU) | Individual user module with headset or helmet connection. Provides local access to the intercom. |
| Dual User Unit (DUU) | A variant for two users with independent communication channels. Ideal for the driver and gunner or crew commander. |
| External Loudspeaker (ELS) | An additional loudspeaker for internal or external announcements. Can be used as an intercom speaker or for external warnings. |
| Headset (HS) | Professional headset or helmet with noise reduction, designed for operation in high-noise vehicles. |
Key Features of the OEDX-20 System
- Modular design — scalable up to 9 users
- Radio authorization via CUU — the commander can control transmission over external radios
- Flexible port configuration — supports various combinations of User Units and Dual Units
- Compatible with most military headsets (Nexus, TP120, TP240)
- Fast connection without configuration — Plug & Play
- Shock, dust, and moisture resistance (MIL-STD-810G)
- Protection against overload and short circuit
- Software updates available through a service port
Typical OEDX-20 System Configuration
| Component | Quantity | Function |
| Main Unit | 1 | Central audio and power switch |
| Commander Unit (CUU) | 1 | Priority system control |
| User Unit | 4–6 | Crew member communication |
| Dual User Unit | 1–2 | Dual working positions |
| External Loudspeaker | 1–2 | Internal or external voice transmission |
| Headset | up to 9 | Individual headsets for the crew |
Applications
- Armored vehicles (APC, IFV, MRAP)
- Patrol and special vehicles
- Mobile command posts
- Engineering vehicles, recovery vehicles, reconnaissance systems
- Industrial and emergency-response transport systems
FAQ — Frequently Asked Questions
1. How many users can the OEDX-20 system support?
Up to 9 users simultaneously. The exact number depends on the configuration and the number of User or Dual User modules.
2. How is communication with external radios carried out?
The connection is made through the Main Unit, while transmission is controlled by the commander via the CUU, which ensures priority over the communication channel.
3. Can the system be used without headsets?
Yes. The External Loudspeaker (ELS) can be used for internal or external communication, for example, for crew alerts or communication with personnel outside the vehicle.
4. What type of power supply is used?
The system operates from 18–32 V DC (typically 24 V DC) and can be directly connected to the vehicle power system.
5. Is system expansion possible?
Yes. Thanks to its modular structure, additional user modules or loudspeakers can be added without changes to the base architecture.
6. What is the protection level of the housing?
All modules have rugged aluminum housings compliant with MIL-STD-810G, resistant to dust, moisture, shocks, and vibration.
7. Can it be integrated with OPTOKON communication systems?
Yes. OEDX-20 is fully compatible with LMSR-R63 routers and LMSW-E33 switches, enabling the creation of a unified tactical IP communication infrastructure.
Create a unified tactical crew communication system with the OPTOKON OEDX-20 intercom.
Get a customized configuration for your vehicle — info@optokon.es
