Alcatel‑Lucent 1642 Edge Multiplexer – Model N1217P YF

The Alcatel‑Lucent 1642 Edge Multiplexer (EM) is a compact, feature‑rich access node designed for deployment at the edge of carrier and enterprise networks. Model N1217P YF is a specific configuration that provides flexible TDM and packet aggregation, SDH/SONET tributary interfaces, and native Ethernet transport. It is ideal for connecting remote sites, cell towers, and enterprise branches to the core network over optical or copper facilities.

Product Overview

The 1642 EM is a modular platform that supports a wide range of interface cards, including E1/T1, DS3/E3, STM‑1/OC‑3, and Gigabit Ethernet. The N1217P YF variant typically includes a mix of PDH and SDH/SONET ports, along with packet‑switched functionality for hybrid TDM/IP environments. It operates as a drop‑insert multiplexer, allowing local traffic to be added or dropped at the edge while passing through express channels.

The unit features a compact 1U or 2U form factor (depending on configuration) and is NEBS‑compliant for central office and outdoor cabinet use. It supports remote management via TL1, SNMP, and a craft interface.

Technical Specifications

• Product Type: Edge Multiplexer

• Model: N1217P YF (1642 EM)

• Chassis Height: 2U (19‑inch rackmount)

• Optical Interfaces: STM‑1/OC‑3 (S‑1.1, L‑1.1) or STM‑4/OC‑12 (optional)

• Electrical Interfaces: Up to 8 x E1/T1 (RJ‑45/BNC) and 2 x DS3/E3 (BNC)

• Ethernet Ports: 4 x 10/100/1000BASE‑T (RJ‑45) + 2 x SFP (GE)

• Switching Capacity: 5 Gbps (non‑blocking)

• Cross‑connect: VC‑4/VC‑3/VC‑12 grooming

• Supported Protocols: SDH/SONET, PDH, Ethernet (VLAN, QoS, LACP)

• Timing: Internal, line‑derived, or external BITS input

• Power Supply: –48 VDC (dual‑feed redundant)

• Power Consumption: 60 W typical

• Operating Temperature: –5°C to +55°C

• Compliance: ITU‑T G.783, G.813, Telcordia GR‑253, NEBS Level 3

Key Features

• Hybrid TDM/packet operation enables smooth migration from legacy to all‑IP networks.

• Flexible tributary cards allow customisation per site requirements.

• Ethernet over SDH (EoS) for efficient packet transport over SONET/SDH.

• Automatic protection switching (APS) for 1+1 or 1:N line protection.

• Compact design saves rack space in space‑constrained locations.

Deployment Scenarios

This edge multiplexer is deployed at cell sites to aggregate E1/T1 backhaul and Ethernet fronthaul traffic onto a single STM‑1/OC‑3 uplink. It is also used in enterprise campus networks to connect remote buildings via fibre while providing legacy PBX trunking. In utility and transportation networks, it supports SCADA and communication services over a resilient optical ring.

Management and Maintenance

The 1642 EM is managed via the Alcatel‑Lucent 5520 NMS or via CLI. It supports performance monitoring (PM) for all interfaces, alarm reporting, and loopback testing. Field replacement of modules is hot‑swappable.

Reliability

With redundant power and protection options, the system MTBF exceeds 150,000 hours.

Conclusion

The Alcatel‑Lucent 1642 Edge Multiplexer N1217P YF is a versatile, reliable access solution that bridges TDM and packet networks, making it a key component for modern edge transport architectures.