Cisco NM-1T3/E3 T3/E3 WAN Module

Equipment Overview

The Cisco NM-1T3/E3 is a single-port network module designed for Cisco NM series routers, providing high-speed WAN connectivity over T3 or E3 links. This module enables enterprise networks to aggregate traffic from branch offices or data centers onto high-bandwidth leased lines. It supports both North American T3 (45 Mbps) and European E3 (34 Mbps) standards, making it a versatile component for multi-site deployments. The module is primarily used to extend backbone capacity or interconnect enterprise LANs over carrier-grade WAN services.

Main Parameters

• Ports: 1 x T3/E3 (DS3/CEPT3) WAN interface
• Data Rates: T3 up to 45 Mbps; E3 up to 34 Mbps
• Form Factor: Cisco NM series network module
• Interface Type: Coaxial (BNC) for T3/E3
• Protocol Support: Framed or unframed T3/E3 operation
• Compatibility: Cisco 2600, 3600, 3700 series routers (with appropriate slots)

Key Advantages

This module offers a cost-effective way to add high-speed WAN connectivity without requiring a full chassis upgrade. Its dual-standard T3/E3 support simplifies inventory management for enterprises operating across different regional standards. The compact NM form factor preserves router slots for additional services, optimizing hardware utilization in existing Cisco infrastructure.

Compatibility & Integration

The Cisco NM-1T3/E3 integrates with Cisco IOS-based routers in the NM series, including 2600, 3600, and 3700 families. It complies with ITU-T G.703 and ANSI T1.102 standards for physical layer connectivity. The module is hot-swappable in supported chassis, allowing field replacement without disrupting adjacent modules.