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FTTH uses 19-inch chassis size parameters

Optical access and telecom site reference Published 17 Sep 2025

Use this reference to prepare product questions for CGWEB NETWORKS. Check interfaces, capacity, protection and installation requirements against the current product documentation.

FTTH chassis designed for 19-inch racks follow standardized width and rack unit heights, with slot configurations optimized for OLTs, service boards, and power modules. Standard 19-Inch Rack DimensionsA 19-inch rack is a standardized frame for mounting electronic equipment, where each module has a front panel width of 19 inches (482. 6 mm), including mounting ears for screws or bolts.

The height of equipment is measured in rack units (U), with 1U = 1. 75 inches (44. 45 mm).

Standard rack cabinets are typically 42U tall, though taller racks exist.

FTT

H chassis are designed to fit these racks, ensuring compatibility with telecom and data center infrastructure.

FTTH Chassis Examples

Fiberhome AN6000-17 OLT Chassis: Occupies 11U of vertical rack space in a 19-inch cabinet. Contains 21 slots: 17 for subscriber access boards, 2 for main control and switching boards (Active/Standby), and 2 for power interface modules. Supports high-density deployment, e.g., 16-port XGS-PON boards can provide 272 10G PON ports, serving tens of thousands of subscribers with standard optical split ratios.

Features a non-blocking multi-terabit backplane for high-speed switching and reduced signal degradation. ZXA10 C320 Chassis: Occupies 2U in a 19-inch rack. Includes 2 slots for main control boards and 2 slots for GPON/XG-PON service boards.

Equipped with a dedicated fan tray and side-to-side airflow for thermal management. High availability is ensured via dual control boards in Active/Standby configuration, providing seamless failover in under 50 milliseconds.

Key Design Considerations

Slot Configuration: Chassis are designed to separate control, service, and power modules for redundancy and scalability. Power Redundancy: Dual independent -48V DC feeds are common for carrier-grade reliability. Cooling: Intelligent fan trays and airflow design prevent hot spots, especially in sealed enclosures.

Backplane Design: Non-blocking, orthogonal backplanes reduce electromagnetic interference and maintain high throughput. SummaryFTTH 19-inch chassis are rack-mountable systems with standardized width (19 inches) and variable height in U units, optimized for high-density subscriber access, redundant control and power modules, and efficient thermal management. Examples like the AN6000-17 and ZXA10 C320 illustrate the range from compact 2U units to large 11U systems, supporting thousands of subscribers while maintaining carrier-grade reliability.

FTTH uses 19-inch chassis size parameters - CGWEB NETWORK INFRASTRUCTURE [PDF]

FTTH uses 19-inch chassis size parameters

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Technical note

This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.

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