Alcatel 1660sm

The Alcatel 1660 Synchronous Multiplexer (SM) is a high-performance Synchronous Digital Hierarchy (SDH) multi-service platform primarily used for metro core and regional aggregation Carritech. Now part of Nokia’s legacy portfolio, it remains a critical component in existing fiber-optic infrastructures, particularly for service providers maintaining TDM-based services while integrating packet-aware traffic CarritechAlibaba.

Product Specifications & Key Features

* Switching Capacity: Supports up to 60 Gbps non-blocking high-order (VC-4) and 40 Gbps low-order (VC-12/VC-3) switching Carritech.

* Interface Density: Accommodates a range from STM-1 (155 Mbps) to STM-64 (10 Gbps), alongside legacy PDH (E1, T1) and modern data interfaces like Gigabit Ethernet and Fibre Channel Carritech.

* WDM Integration: Features direct DWDM compatibility with "colored" interfaces, eliminating the need for external transponders in optical networks Carritech.

* Scalability (Release 4): The R4 version introduced improved Layer 2 packet switching for converged services like Ethernet and MPLS Carritech.

Market Trends & Insights

* Secondary Market Dominance: As the product has reached its End-of-Life (EOL) phase with the original manufacturer (Nokia), the market has shifted toward refurbished and tested new-old-stock hardware CarritechAlibaba.

* Maintenance Demand: There is high consistent demand for critical maintenance parts, such as fan trays (3AL78856BA), which typically retail between $80 – $100 Alibaba.

* Refurbishment Support: Third-party specialists like Carritech provide full remote technical support and hardware repair, ensuring these systems remain operational for legacy network lifecycles Carritech.

* Supply Chain: Global B2B suppliers, particularly in China, maintain stocks of service cards (e.g., STM-64 or 16-port E1 cards) ranging from $150 to $1,000 depending on the complexity of the module .