The Alcatel 7353 ISAM FTTB Modular ONU is engineered for Fiber‑to‑the‑Building (FTTB) deployments, serving as a compact and modular access node at the aggregation point of fiber and copper connections. Designed to reside in building basements or utility cabinets, the system supports fiber uplinks (such as GPON, Gigabit Ethernet, or point-to-point fiber) and provides high-density VDSL2 connectivity over internal copper infrastructure.

Physically, the unit features a slim chassis with integrated support for modular line card slots—typically accommodating 16 or 24 VDSL2 ports per card. Configurations allow the system to serve a range of user densities by inserting line modules to suit subscriber counts and building layout. As part of the ISAM family, the FTTB module shares a common software and management architecture with platforms such as the 7302 ISAM and 7353 ISAM CX, enabling streamlined roll-out, maintenance, and interoperability.

Subscriber services are delivered via standard IP-based technologies, including IPTV, VoIP, and high-speed internet. The platform supports advanced subscriber-level features such as VLAN tagging, QoS enforcement, multicast replication, and subscriber authentication, allowing operators to deliver differentiated services reliably across large subscriber pools.

For backbone aggregation, the ONU supports multiple Gigabit Ethernet uplinks, with configurable routing and switching integration to fit seamlessly into existing network infrastructure. Operating without internal fans, the unit utilizes passive cooling and supports both AC and DC power inputs—with optional battery backup—to ensure performance and reliability in varied environmental conditions.

The design emphasizes reliability and scalability: all major components are hot-swappable, and the platform supports in-service expansion or maintenance without disrupting subscriber traffic. Management and remote diagnostics are available through standard interfaces, including CLI and SNMP, and the unit integrates with centralized Alcatel-Lucent or operator-defined network management systems.

Built to carrier-grade standards (ETSI compliant and equivalent ruggedness to NEBS requirements), the 7353 ISAM FTTB ONU is an ideal choice for deployments where space is limited, subscriber density is high, and operational simplicity is key—particularly in MDU or small-building deployments using existing copper for final-mile connectivity.