Description
The DDS DFO-72LC is a high-density rack-mount Optical Distribution Frame designed for fiber termination, splicing, patching, protection, and organized fiber management in telecom rooms, data centers, FTTH/FTTX networks, and structured cabling installations. Its sliding drawer design provides convenient access to adapters, splice trays, and fiber storage while maintaining proper fiber routing and bend-radius control.
The design follows the common 19-inch rack-mount ODF architecture used for high-density LC fiber distribution.
Product Information
| Item | Specification |
|---|---|
| Brand | DDS |
| Part Number | DFO-72LC |
| Product Type | Optical Distribution Frame (ODF) |
| Product Name | 72-Port LC Optical Distribution Frame |
| Fiber Capacity | Up to 72 LC fiber ports |
| Adapter Interface | LC |
| Adapter Type | LC Simplex / Duplex configuration |
| Mounting | 19-inch Rack Mount |
| Design | Sliding / Pull-Out Drawer |
| Application | Fiber Termination, Splicing & Distribution |
| Installation | Indoor |
| Color | Black |
| Material | Cold-Rolled Steel |
| Finish | Electrostatic Powder Coating |
| Cable Management | Internal fiber routing and storage |
| Splice Management | Integrated splice tray arrangement |
| Front Panel | LC adapter mounting panel |
| Fiber Protection | Fiber routing and bend-radius management |
Mechanical Specifications
| Parameter | DDS DFO-72LC |
|---|---|
| Rack Standard | 19-inch |
| Rack Height | 2U* |
| Rack Width | 482.6 mm nominal |
| Approx. Height | 88.9 mm |
| Approx. Depth | 300–350 mm* |
| Construction | Steel enclosure |
| Front Access | Pull-out / sliding drawer |
| Mounting Ears | Integrated |
| Surface Treatment | Black powder coating |
| Installation | Standard 19-inch network/telecom rack |
| Cable Entry | Rear |
| Fiber Storage | Internal |
| Grounding | Grounding provision on metal chassis |
Fiber Optic Specifications
| Parameter | Specification |
|---|---|
| Fiber Type | Single-mode / Multimode |
| Compatible Fiber | OS2, OM1, OM2, OM3, OM4 |
| Connector Interface | LC |
| Adapter Configuration | LC Simplex / LC Duplex |
| Maximum LC Ports | 72 |
| Splicing | Fusion Splicing |
| Splice Tray | Modular / removable |
| Fiber Routing | Protected internal routing |
| Fiber Storage | Internal slack-fiber storage |
| Bend Radius | Designed to maintain safe fiber bend radius |
| Pigtail Compatibility | LC pigtails |
| Patch Cord Compatibility | LC-LC, LC-SC and other LC-based configurations |
LC Port Configuration
The DFO-72LC is designed for high-density LC termination.
Standard Configuration
- 72 × LC adapter positions
- Front-accessible LC interfaces
- Numbered/identification area for fiber management
- Compatible with LC pigtails
- Suitable for LC patch cords
- Modular adapter panel design
Optional Duplex Configuration
Where LC duplex adapters are used, the physical connector arrangement can be configured according to the selected adapter panel. A 72-fiber LC ODF can also be implemented using 36 LC duplex adapter ports.
Splice Tray
The ODF incorporates an internal fiber splice-management area designed to accommodate fusion splicing and protect splice points.
Splice Tray Features
- Modular splice tray design
- Removable trays for easier installation
- Fiber routing channels
- Splice protection sleeve holders
- Fiber identification
- Slack-fiber storage
- Protection against excessive fiber bending
- Organized transition between incoming cable and pigtails
Typical ODF splice trays are available in 12- and 24-fiber configurations, allowing the overall capacity to be built from multiple trays.
Construction
| Component | Material / Feature |
|---|---|
| Main Housing | Cold-Rolled Steel |
| Front Panel | Steel |
| Rack Mounting Brackets | Steel |
| Splice Tray | ABS / Engineering Plastic |
| Adapter Panel | Steel |
| Fiber Management Parts | ABS / Engineering Plastic |
| Finish | Electrostatic Powder Coating |
| Color | Black |
| Corrosion Protection | Powder-coated surface |
Cold-rolled steel with a powder-coated finish is widely used for rack-mounted ODF housings because it provides mechanical protection and dimensional stability.
Sliding Drawer Design
The DFO-72LC features a pull-out/sliding design that allows technicians to access the internal fiber-management area without removing the entire ODF from the rack.
Advantages
- Easy fiber installation
- Easy fusion-splicing access
- Simplified troubleshooting
- Convenient patch-cord management
- Improved maintenance access
- Reduced installation time
- Better visibility of splice trays and fiber routing
Sliding ODF designs are commonly used to provide access to the splice and termination area while the enclosure remains rack-mounted.
Cable Management
The DDS DFO-72LC provides organized internal fiber routing to protect optical fibers and maintain a professional installation.
Cable Management Features
- Rear cable entry
- Internal fiber routing
- Slack-fiber storage
- Strain-relief provisions
- Splice-tray routing
- Pigtail management
- Patch-cord access from the front
- Fiber bend-radius control
- Cable fixing points
Maintaining appropriate fiber bend radius is important because excessive bending can increase optical loss and potentially damage the fiber.
Applications
The DDS DFO-72LC is suitable for:
- FTTH networks
- FTTX networks
- Fiber backbone networks
- Data centers
- Telecom rooms
- ISP networks
- Enterprise networks
- Structured cabling systems
- LAN / WAN networks
- CATV networks
- PON networks
- OLT/ONT fiber distribution
- Central offices
- Fiber termination cabinets
- Campus networks
- Industrial communication networks
ODFs are commonly used for fiber termination, interconnection, distribution, storage, and protection in FTTH, LAN/WAN, CATV, and telecommunications infrastructure.
Installation
The DDS DFO-72LC is designed for installation in standard 19-inch equipment racks and network cabinets.
Installation Procedure
- Mount the ODF using the supplied rack mounting hardware.
- Secure the rack ears to the 19-inch rack rails.
- Feed the incoming fiber-optic cable through the rear cable entry.
- Secure the incoming cable using the cable fixation/strain-relief point.
- Route the fibers into the splice tray.
- Perform fusion splicing with the LC pigtails.
- Install splice protection sleeves.
- Organize the fibers inside the tray.
- Store the required fiber slack.
- Connect LC adapters and patch cords.
- Close the sliding drawer after confirming proper fiber routing.
Environmental Specifications
| Parameter | Specification |
|---|---|
| Installation Environment | Indoor |
| Operating Temperature | -20°C to +60°C* |
| Storage Temperature | -40°C to +70°C* |
| Relative Humidity | ≤95%, non-condensing |
| Protection | Indoor equipment enclosure |
| Operating Altitude | ≤3,000 m |
| Environment | Telecom / Data Center / Network Room |
* Final environmental ratings should be confirmed against the DDS production specification. Comparable rack-mount ODF products specify operating ranges around -40°C to +60°C or wider depending on construction.
Mechanical & Fiber Management Features
Key Features
- 19-inch standard rack mounting
- 72 LC fiber capacity
- High-density fiber termination
- Pull-out sliding drawer
- Integrated fiber management
- Modular splice tray
- Fusion-splice support
- LC adapter compatibility
- Internal fiber storage
- Cable strain relief
- Bend-radius protection
- Easy front access
- Durable steel construction
- Black powder-coated finish
- Suitable for single-mode and multimode fiber
- Suitable for telecom and data-center applications
Standards & Compliance
The DDS DFO-72LC is designed around commonly used rack-mount fiber distribution and structured-cabling practices.
Applicable / Relevant Standards:
- IEC 61754-20 — LC connector interface
- IEC 61300 series — Fiber-optic interconnecting device testing
- IEC 60794 — Optical fiber cables
- ISO/IEC 11801 — Generic cabling for customer premises
- ANSI/TIA-568.3 — Optical fiber cabling
- 19-inch rack mounting architecture
The exact compliance status should be stated as “Designed to comply with / compatible with” unless DDS has completed formal third-party certification testing.
Product Advantages
High-Density Fiber Management
Provides a compact solution for terminating and organizing a large number of LC fiber connections.
Easy Maintenance
The sliding drawer provides direct access to the internal splice and fiber-management area.
Professional Installation
Internal routing and storage keep fibers organized and reduce the possibility of fiber damage.
Strong Metal Construction
The steel chassis provides mechanical protection for fiber connections and splice components.
Flexible Fiber Compatibility
Can be configured for both single-mode and multimode fiber networks.
Rack-Mount Design
Designed for standard 19-inch network racks and telecommunications cabinets.
Recommended Ordering Configuration
Brand: DDS
Part Number: DFO-72LC
Product: 72-Port LC Optical Distribution Frame
Rack Type: 19-inch
Capacity: 72 LC
Construction: Cold-Rolled Steel
Color: Black
Design: Pull-Out Sliding Drawer
Application: Fiber Splicing & Distribution
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