4-Port Serial WAN Network Interface Module
Product Description
The NIM-4T= is a 4-port synchronous serial WAN interface module from Cisco designed for Cisco ISR 4000 Series routers. It enables organizations to connect routers to legacy serial WAN infrastructures such as leased lines, SCADA systems, or industrial communication networks.
With flexible serial protocols and high reliability, this module is ideal for enterprises, utilities, and service providers maintaining serial connectivity while integrating modern IP routing platforms.
Model Type
4-Port Serial WAN Interface Module
Category
Networking – Router WAN Expansion Modules
Key Features
Four Serial WAN Ports — Provides four synchronous serial interfaces for WAN connectivity using Smart Serial connectors.
Legacy Network Integration — Ideal for connecting to legacy telecom, SCADA, or industrial serial systems.
Protocol Flexibility — Supports HDLC, PPP, Frame Relay, and other serial encapsulations via Cisco IOS XE.
High Reliability WAN Connectivity — Designed for stable communication over long-distance leased lines.
Software-Configurable Operation — Easily configured within Cisco IOS XE for routing, monitoring, and security.
Compact Router Integration — Installs directly into ISR NIM slots, reducing external hardware needs.
Technical Specs at a Glance
| Specification | Details |
|---|---|
| Model | NIM-4T= |
| Ports | 4× Smart Serial WAN ports |
| Interface Type | Synchronous serial |
| Supported Protocols | PPP, HDLC, Frame Relay |
| Compatibility | Cisco ISR 4000 Series routers |
| Management | Cisco IOS XE configuration |
| Installation | Internal NIM slot |
Typical Use Cases
Legacy WAN Connectivity — Connect ISR routers to older serial-based telecom circuits.
Industrial & Utility Networks — Useful for SCADA, control systems, and remote monitoring networks.
Service Provider Links — Supports leased serial lines in specialized WAN deployments.
Migration Scenarios — Maintain serial links while transitioning to Ethernet-based WANs.
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