Cisco 15216-FLB-2-56.5 ITU-100 GHz 2-Ch, FlexMod-1556.55, 1555.75

Overview
The Cisco 15216-FLB-2-56.5, marketed as ITU-100 GHz 2-Ch FlexMod-1556.55, 1555.75, is a high-performance flexible modular transceiver designed for demanding carrier and enterprise networks. Engineered to deliver reliable 100 GHz operation across two channels, this module provides the bandwidth and precision required for modern high-speed transport applications. Its compact form factor and robust construction make it an ideal choice for dense rack environments where space and power efficiency are critical.

Key Features

• Dual-channel operation at 1556.55 MHz and 1555.75 MHz for flexible spectrum allocation
• Supports ITU-100 GHz specifications for high-capacity transport
• Plug-in FlexMod design for easy hot-swap installation and minimal downtime
• Low power consumption with optimized thermal performance
• Built-in diagnostics and monitoring compatible with Cisco network management tools

Technical Specifications

• Model/Part Number: 15216-FLB-2-56.5
• Frequency range: 1555.75 MHz to 1556.55 MHz
• Channel count: 2
• Form factor: FlexMod
• Operating temperature: -40 to 85 deg Celsius
• Power draw: max 12 watts per module
• Connector type: standard Cisco FlexMod interface
• Compliance: ITU-G.709, ITU-G.975.1

Applications

• High-speed optical transport networks (OTN) requiring 100 GHz channel spacing
• Carrier aggregation and wavelength division multiplexing (WDM) systems
• Metro and long-haul backbone infrastructure
• Data center interconnects demanding low latency and high reliability
• Enterprise wide area network (WAN) upgrades to support next-generation services

With its proven Cisco reliability and flexible configuration options, the 15216-FLB-2-56.5 module helps network operators maximize capacity, simplify inventory management, and future-proof their optical transport investments.