The Alcatel 1660 SM R4 is the enhanced release of the proven 1660 SM platform, delivering advanced SDH and packet-based transport capabilities within a single, compact, and highly scalable system. Designed for metro core and regional aggregation networks, Release 4 (R4) introduces expanded switching capacity, increased interface density, and improved support for converged services—including Ethernet, storage, and legacy TDM traffic.
Building on Alcatel-Lucent’s optical transport leadership, the 1660 SM R4 offers full STM-1 to STM-64 support and integrates Layer 2 packet switching with advanced grooming and cross-connect functions. It enables seamless service delivery across hybrid networks by combining high-speed optical transmission with packet-aware traffic engineering.
With native support for technologies such as GFP, VCAT, LCAS, and VLAN/Q-in-Q, and compatibility with DWDM environments, the 1660 SM R4 is a future-proof solution for operators looking to migrate legacy infrastructure while introducing modern, differentiated services. It is ideally suited for carrier networks, utilities, and enterprise transport systems that require high availability, flexible service provisioning, and dependable long-term performance.
At Carritech, we provide comprehensive lifecycle support for the Alcatel 1660 SM R4, including global spare parts supply, tested and warranted hardware, expert repair services, and technical assistance. Whether expanding an existing deployment or maintaining legacy systems, our engineering team ensures your 1660 SM R4 infrastructure remains reliable, efficient, and service-ready.
Enhanced Switching Capacity
Full non-blocking cross-connect architecture with up to 60 Gbps high-order and 40 Gbps low-order switching capacity, supporting STM-1 to STM-64 levels.
Integrated Packet and TDM Transport
Seamlessly combines SDH and Layer 2 packet switching for converged service delivery, supporting Ethernet, MPLS, RPR, and legacy PDH traffic.
Flexible Interface Support
Supports a wide range of client interfaces including E1, T1, E3, DS3, Fast Ethernet, Gigabit Ethernet, Fibre Channel, ESCON, FICON, and V.35.
Advanced Service Mapping
Implements GFP, VCAT, and LCAS to enable efficient Ethernet transport over SDH, with VLAN tagging, Q-in-Q, and traffic policing for QoS enforcement.
DWDM Compatibility
Native support for colored STM-16 and STM-64 interfaces enables direct integration into DWDM systems for long-reach transmission.
Carrier-Grade Resilience
Built-in support for SNCP, MSP 1+1, and ring protection schemes ensures high availability and fast recovery in the event of network faults.
Modular, Scalable Design
Slot-based architecture with hot-swappable cards and upgrade paths for bandwidth and service expansion without service disruption.
Advanced Synchronization
SSM-compliant with support for internal/external clocks to maintain network-wide timing integrity.
Efficient Power and Cooling
Redundant -48V DC power inputs with per-card DC/DC isolation and passive cooling design for reliable operation in telecom environments.
Centralised Network Management
Fully compatible with the Alcatel-Lucent 1350 Management Suite, enabling remote provisioning, monitoring, and fault management across multi-site deployments.
Carritech Global Support
Supported by Carritech’s expert team with access to spare parts, repair services, and technical consultancy to extend system lifespan and reduce operational risk.
The Alcatel 1660 SM R4 is a high-performance SDH-based multi-service platform designed for metro and regional transport applications. Supporting STM-1 (155 Mbps) up to STM-64 (10 Gbps), it features a fully non-blocking cross-connect matrix with switching capacities of up to 60 Gbps for high-order traffic (VC-4) and 40 Gbps for low-order grooming (VC-12/VC-3). These capabilities enable flexible, granular aggregation and distribution of both legacy and modern services.
Release 4 introduces enhanced support for packet-based transport, offering integrated Layer 2 switching for Ethernet, MPLS, and RPR services. The system supports advanced encapsulation and mapping protocols such as GFP (Generic Framing Procedure), VCAT (Virtual Concatenation), and LCAS (Link Capacity Adjustment Scheme), along with VLAN, Q-in-Q, and traffic policing for differentiated service provisioning.
The platform offers a wide range of client interface options including PDH (E1, T1, E3, DS3), Fast Ethernet, Gigabit Ethernet, Fibre Channel, FICON, ESCON, G.703, V.35, and FDDI. These modules are housed within a modular, slot-based chassis that supports hot-swappable cards, allowing in-service upgrades and simplified maintenance.
Synchronization is maintained via internal and external clocking options, with full compliance to SSM (Synchronization Status Messaging) for timing integrity across large-scale networks. Protection features such as Sub-Network Connection Protection (SNCP), Multiplex Section Protection (MSP 1+1), and ring-based restoration schemes are built-in to ensure high availability and service continuity.
Power is provided via redundant -48V DC inputs, and the system is housed in a standard ETSI-compliant 19″ or 23″ rack, with passive cooling and a temperature range suited to controlled environments. Management is performed through the Alcatel-Lucent 1350 Management Suite, with local and remote access via CLI, SNMP, or web-based GUI for provisioning, monitoring, and diagnostics.
The 1660 SM R4 is fully interoperable with DWDM systems through native support for coloured STM-16 and STM-64 interfaces, enabling efficient integration into high-capacity optical backbones.
| Period | Owner / Marketer | Notes |
|---|---|---|
| Early 2000s – 2006 | Alcatel | Developed and launched the 1660 SM as part of Alcatel’s Optical Multi‑Service Node (OMSN) family, including early R‑level releases. |
| 2006 – 2016 | Alcatel‑Lucent | Continued marketing and support of the 1660 SM R4 under Alcatel‑Lucent following the merger. |
| 2016 – Present | Nokia | With Nokia’s acquisition of Alcatel‑Lucent, the 1660 SM R4 entered Nokia’s legacy portfolio, with existing documentation and support maintained. |
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From expert maintenance and repair to reliable part sourcing and technical consultation, we provide comprehensive support for every stage of your network’s lifecycle. Whether you’re extending the life of legacy systems or integrating with modern infrastructure, our team ensures seamless, efficient, and cost-effective solutions—so you can focus on performance, not problems.