Cisco 155SM Lightstream 1010 ATM 4-Port Fiber Module - 73-2168-0

Overview
The Cisco Lightstream 1010 ATM 4-Port Fiber Module (part number 155SM, product code 73-2168-0) delivers high-speed, reliable fiber connectivity for enterprise and service provider networks. Designed for seamless integration with Cisco Lightstream 1010 platforms, this module supports asynchronous transfer mode (ATM) over single-mode fiber, enabling robust data, voice, and video transport across demanding environments.

Key Features

• Four independent 155 Mb/s ATM ports for flexible network design
• Support for both point-to-point and point-to-multipoint configurations
• Hot-swap capable for minimal downtime during upgrades or maintenance
• Built-in diagnostics and LED status indicators for quick fault isolation
• Compact, rack-mountable form factor compatible with standard Cisco chassis

Technical Specifications

• Interface type: 155 Mb/s ATM over single-mode fiber
• Connector: LC duplex
• Wavelength: 1310 nm
• Maximum reach: 10 km (with standard single-mode fiber)
• Power consumption: 5 W typical
• Operating temperature: 0 to 40 degrees C
• Storage temperature: -40 to 70 degrees C
• Dimensions: 1.75 in (H) x 4.5 in (W) x 5.5 in (D)
• Compliance: RoHS, FCC Part 15 Class B

Applications
The Lightstream 1010 ATM 4-Port Fiber Module is ideal for:

• Enterprise campus backbones requiring high-capacity, low-latency links
• Service provider edge routers delivering ATM services to customers
• Multimedia distribution networks that need synchronized video and audio streams
• Disaster recovery sites where reliable fiber connectivity is critical
• Any environment that benefits from scalable, modular fiber solutions

By choosing the Cisco Lightstream 1010 ATM 4-Port Fiber Module, organizations gain a proven, high-performance solution that simplifies network architecture while delivering the speed and reliability needed for modern data traffic.