SM-X-1T3/E3 | Cisco Expansion Module

Description 

The Cisco SM-X-1T3/E3 is a T3/E3 WAN Interface Module designed for Cisco ISR 4000 Series routers. It provides one clear-channel T3 or E3 interface for high-speed WAN connectivity, supporting flexible deployment in service provider or enterprise edge environments.

Technical Specifications 

Information About SM-X-1T3/E3

The Cisco SM-X-1T3/E3 is a high-speed WAN interface module designed for Cisco 4000 Series Integrated Services Routers (ISRs). It supports one clear-channel T3 or E3 interface for robust data transport across legacy telecom circuits. This module enables enterprise and service provider networks to integrate traditional T3/E3 connectivity into modern IP routing environments, making it ideal for hybrid WAN deployments and migration scenarios.

Key Features:

• Product Type: WAN Interface Service Module

• Interface Configuration: 1 x T3 (DS3) or E3 port with dual BNC coax connectors

• Data Rates: T3 – 44.736 Mbps, E3 – 34.368 Mbps

• Supported Platforms: Cisco ISR 4000 Series (4300 and 4400)

• Line Coding: B3ZS (T3), HDB3 (E3)

• Framing Standards: C-bit Parity, M13 (T3); G.751, G.832 (E3)

• Protocols Supported: HDLC, PPP, Frame Relay, MLPPP

• Hot Swap Support: Yes

• Power Consumption: Approximately 12–15 watts

• Management Interface: Cisco IOS XE via CLI, SNMP, or web tools

• Dimensions: SM-X module form factor (fits standard ISR slots)

• User Type: Network engineers, service providers, telecom integrators

• Purpose: Integrates legacy T3/E3 WAN links into modern IP routing infrastructure

• Application Area: Enterprise WAN edge, branch connectivity, service provider circuits

• Compliance: Standards-based WAN signaling for telecom interoperability

This module is essential for organizations with existing T3/E3 infrastructure who are transitioning to modern IP networks. It offers seamless integration, advanced management capabilities, and a cost-effective way to maintain service continuity while upgrading network architecture.