16-Port Asynchronous Serial Network Interface Module

Product Description
The NIM-16A= is a 16-port asynchronous serial interface module from Cisco designed for Cisco ISR 4000 Series routers. It enables routers to connect to multiple asynchronous serial devices such as console ports, legacy terminals, modems, and out-of-band management equipment.
This module is ideal for organizations that need centralized remote management of network devices or support for legacy serial-based infrastructure while using modern ISR routing platforms.
Model Type
16-Port Asynchronous Serial Interface Module
Category
Networking – Router Serial & Management Expansion Modules
Key Features
16 Asynchronous Serial Ports — Provides high-density async connectivity for terminal servers, modems, and console management.
Out-of-Band Management Support — Enables remote troubleshooting and console access to switches, firewalls, servers, and routers.
Legacy Device Integration — Useful for environments still operating serial terminals or industrial communication equipment.
High-Density Port Consolidation — Reduces need for separate terminal servers by integrating access directly into ISR routers.
Cisco IOS XE Configuration — Managed using standard IOS commands for authentication, access control, and monitoring.
Compact Internal Module — Installs into ISR NIM slots for branch or data-center deployments.
Technical Specs at a Glance
| Specification | Details |
|---|---|
| Model | NIM-16A= |
| Ports | 16× asynchronous serial ports |
| Interface Type | Async serial (RJ-45 via octal cables) |
| Primary Function | Terminal / console access & modem connectivity |
| Compatibility | Cisco ISR 4000 Series routers |
| Management | Cisco IOS XE |
| Installation | Internal NIM slot |
Typical Use Cases
Out-of-Band Network Management — Central console access for routers, switches, and firewalls.
Data Center Device Control — Manage multiple serial-only devices from a single router.
Legacy System Connectivity — Supports terminals, modems, and industrial serial equipment.
Branch Infrastructure Management — Useful where remote troubleshooting access is required.








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