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VD‑3029 is a high‑capacity double‑sided main distribution frame built to IEC standards, designed for medium‑large telephone exchanges, campus central communication rooms and multi‑building compound copper‑line aggregation points. Unlike the single‑sided wall‑mount VD‑3028 model, this unit adopts a dual‑sided operating layout to achieve 2400‑pair termination capacity within compact floor‑occupied dimensions. Constructed of heavy‑gauge cold‑rolled steel, it serves as the central cross‑connection hub for subscriber telephone lines, DSL services and copper‑based communication infrastructures.It separates incoming trunk cables and subscriber drop‑lines, supporting efficient jumper management, line testing and quick service reconfiguration for high‑volume copper‑circuit deployments.
1.Double‑Sided Working Layout For 2400‑Pair High‑Density Termination
Single‑sided frames need much larger floor space to hit equivalent pair counts. VD‑3029 utilises both front and rear mounting planes, concentrating full 2400‑pair termination capability within 600 × 2000 mm footprint. It maximises termination density for sites with limited equipment‑room floor area and heavy subscriber‑line demands. Technicians can separate incoming trunk termination and subscriber jumper work on opposite sides to avoid operational interference.
2. IEC‑Standardised Cold‑Rolled Steel Robust Framework
Fabricated from industrial cold‑rolled sheet steel with anti‑corrosion surface finishing. Strictly follows IEC mechanical dimension specifications, ensuring interoperability with globally mainstream MDF accessories, terminal blocks, over‑voltage protection modules and test units. The rigid whole‑frame structure resists long‑term deformation under the weight of dense copper trunk cables and abundant jumpers.
3. Zone‑Separated Dual‑Side Operation Optimised For O&M Workflow
One side is dedicated for trunk‑cable fixed termination, while the reverse side handles subscriber‑side jumpers and testing tasks. This physical separation reduces jumper‑cable entanglement, simplifies daily troubleshooting, cut‑over work and subscriber service changes. Two‑sided access also allows multiple technicians to conduct maintenance simultaneously without mutual obstruction.
4. Space‑Efficient Footprint For Central‑Room Deployment
Overall dimension 600 mm width × 2000 mm height balances high capacity and floor consumption. It can be arranged side‑by‑side in rows within standard telecom equipment rooms, convenient for capacity expansion by adding extra frames as subscriber quantities grow, suitable for phased‑expansion communication‑site projects.
5. Universal Compatibility With Global MDF Accessory Portfolio
Reserved mounting positions match mainstream internationally‑sourced termination hardware. No special custom‑made adapters are required; integrators can select terminal blocks, surge‑protection and test‑accessories according to local telecom‑project specifications, shortening component‑matching cycles for international tender orders.
6. Structured Cable‑Routing Reserve For Mass Jumper Management
Built‑in cable‑guide slots on both sides organise large‑volume jumpers and trunk cables, preventing chaotic cable stacking. It maintains neat wiring appearance and lowers the risk of accidental line damage during routine maintenance operations in high‑traffic communication‑rooms.
| Category | Specification |
| Model | VD‑3029 |
| Total Termination Capacity | 2400 pair telephone / DSL copper subscriber lines |
| Structure Type | Double‑sided operating main distribution frame |
| Standard Dimensions | W:600 mm × H:2000 mm |
| Material | Heavy‑duty anti‑corrosion treated cold‑rolled steel |
| Compliance Standard | IEC cabinet & mechanical dimension standard |
| Installation Mode | Floor‑standing equipment‑room row‑mount deployment |
| Applicable Accessories | Compatible with standard MDF terminal blocks, protection & test units |
| Application Medium | Analog telephone lines, DSL copper subscriber cables |
• Medium‑size telephone exchange central communication‑rooms
• University / large hospital campus aggregated voice‑service nodes
• Residential compound multi‑building copper‑line termination centre
• Telecom operator expansion‑phase MDF capacity upgrade projects
• International communication‑infrastructure tender bidding deployments following IEC norms
• Sites requiring separated trunk‑and‑subscriber‑side maintenance workflows
| Item | Details |
| Minimum Order | 1 unit |
| Customization | Special dimension modification, OEM marking (bulk‑order only) |
| Production Capacity | 160 sets per month |
| Lead Time | 10‑16 working‑days for standard size; 20‑30 working‑days for custom dimensions |
| Packing | Shock‑resistant export wooden‑case packing for full assembled frame |
| Trade Terms | FOB, CFR, CIF, EXW |
Q: How is VD‑3029 different from wall‑mount VD‑3028 MDF?
A: VD‑3028 is wall‑mounted single‑sided 1380‑pair unit for space‑limited closets. VD‑3029 is floor‑standing double‑sided 2400‑pair IEC‑standard frame, designed for central communication‑rooms with large‑volume lines. Dual‑side layout separates trunk‑cable and subscriber‑jumper work for multi‑technician concurrent‑maintenance.
Q: Do IEC‑standard frames restrict my choice of terminal blocks?
A: No. Its mounting positions follow IEC dimensional norms and fit most mainstream global MDF terminal, protection and test modules. You can select accessories based on local telecom‑project requirements.
Q: Can multiple VD‑3029 frames be installed side‑by‑side for capacity expansion?
A: Yes. Standard 600 mm width supports row‑by‑side arrangement in telecom‑rooms. Extra frames can be added later when subscriber‑line quantities increase for phased‑capacity‑growth projects.
Q: Are terminal blocks and protective modules included in shipment?
A: Delivery contains only the cold‑rolled‑steel frame skeleton. Termination blocks, surge‑protection and test‑hardware need separate ordering according to project technical requirements.
Q: What on‑site conditions are required for installation?
A: It is floor‑standing, requiring flat solid telecom‑room floor and proper earthing facilities. Both front‑side and rear‑side working space need reserving for double‑sided maintenance access.
