Cisco SPA-3XOC3-ATM-V2 3-Port OC-3c/STM-1 ATM Shared Port Adapter

The Cisco SPA-3XOC3-ATM-V2 is a 3-port OC-3c/STM-1 ATM Shared Port Adapter (SPA) designed for deployment in Cisco routing platforms that support the SPA interface architecture. This module provides high-performance ATM connectivity for service provider and enterprise networks that rely on SONET/SDH transport technologies. It enables efficient integration of ATM-based services within modern routing infrastructures while supporting reliable data transmission across optical transport networks.The adapter includes three OC-3c/STM-1 ATM ports, each capable of supporting data rates of up to 155 Mbps. These interfaces allow routers to connect directly to SONET/SDH networks and ATM infrastructures commonly used in telecommunications environments. The module supports ATM traffic handling and enables service providers to deliver broadband access, legacy ATM services, and various data transport applications across optical network backbones.

Designed as part of Cisco’s Shared Port Adapter (SPA) family, the module integrates seamlessly with compatible Cisco routers and modular interface systems. The SPA architecture allows network operators to scale connectivity by installing additional modules without replacing the entire routing platform. This modular design improves flexibility and simplifies network expansion.

The SPA-3XOC3-ATM-V2 adapter is engineered for continuous operation in demanding telecommunications and service provider environments. Its robust hardware design ensures stable connectivity, reliable signal transmission, and consistent network performance in high-availability infrastructures where SONET/SDH and ATM technologies are still deployed.