C1921-4SHDSL/K9 Cisco 1921 4-Pair SHDSL Bundle, HWIC-4SHDSL

Highlights of Cisco C1921-4SHDSL/K9 4-Pair Services Router

The Cisco C1921-4SHDSL/K9 router is a powerful and flexible Integrated Services Router designed for branch offices requiring reliable SHDSL connectivity. With high-performance processing, modular expansion, and enterprise-grade features, this router delivers secure and scalable networking solutions.

General Information

• Manufacturer: Cisco
• Part Number: C1921-4SHDSL/K9
• Product Type: Integrated Services Router
• Sub Type: 4-Pair Services Router

Technical Specifications

Performance & Memory

• Powered by high-performance multicore processors
• 512 MB DRAM for smooth data processing
• 256 MB flash memory for system storage
• Optimized for enterprise-grade networking performance

Network Interfaces

• 2 x integrated 10/100/1000 Gigabit Ethernet ports (RJ-45)
• Supports high-speed LAN and WAN connectivity
• Ideal for business and branch network deployments

Expansion & Modularity

• 2 x Enhanced High-Speed WAN Interface Card (EHWIC) slots
• Backward compatible with HWIC, WIC, and VWIC modules
• Flexible expansion for customized network solutions

Management & Console Ports

• 1 x RJ-45 console port for traditional management
• 1 x auxiliary (AUX) port for remote access
• 1 x mini-Type B USB console port for modern connectivity

Form Factor & Physical Design

• Compact 1U rack-mountable chassis
• Suitable for desktop or rack installations
• Space-efficient design for enterprise environments

Physical Specifications

• Dimensions: 1.75 x 13.5 x 11.5 inches (4.45 x 34.29 x 29.21 cm)
• Weight: Approximately 11.9 lbs (5.41 kg)

Power Configuration

• Internal AC power supply (100–240V)
• Optional DC power support for flexible deployment
• Reliable power options for continuous operation

Overview of Cisco C1921-4SHDSL/K9 1921 SHDSL Bundle Router

The Cisco C1921-4SHDSL/K9 1921 Integrated Services Router is a powerful and flexible networking solution designed for branch offices and enterprise edge environments that require reliable SHDSL connectivity secure data transmission and consistent routing performance this router is part of the Cisco 1900 Series ISR G2 platform and integrates routing WAN access advanced security and modular expansion into a single compact device ensuring efficient network operations and simplified infrastructure management across diverse business environments.

Four Pair SHDSL WAN Connectivity for Reliable Long Distance Data Transmission

The Cisco C1921-4SHDSL/K9 includes a HWIC-4SHDSL module that supports four pair SHDSL connectivity delivering reliable WAN access over copper lines ensuring stable data transmission across long distances and providing consistent performance for organizations operating in remote or infrastructure limited areas.

Symmetric Data Transmission for Balanced Upload and Download Speeds in Business Applications

The SHDSL technology provides symmetric bandwidth allowing equal upload and download speeds which is essential for applications that require consistent data flow such as VoIP video conferencing and cloud based services ensuring efficient communication and smooth operation across enterprise networks.

Extended Reach Connectivity for Remote Locations and Challenging Deployment Environments

The four pair SHDSL configuration extends connectivity reach enabling organizations to establish reliable network connections in areas where fiber or cable infrastructure is not available ensuring business continuity and consistent access to network resources.

Dual Gigabit Ethernet Ports for High Speed Local Area Networking

The Cisco C1921-4SHDSL/K9 is equipped with dual Gigabit Ethernet ports providing high speed LAN connectivity that supports efficient data exchange between devices enabling smooth operation of internal applications and ensuring reliable communication across the network infrastructure.

High Throughput for Modern Enterprise Workloads and Applications

The Gigabit Ethernet interfaces allow high throughput data transfer enabling organizations to support bandwidth intensive applications such as cloud computing large file transfers and multimedia communication without compromising performance or user experience.

Stable Network Performance with Optimized Latency and Efficient Data Flow

The router ensures stable network performance by optimizing data flow and reducing latency ensuring that applications run smoothly and communication between devices remains consistent and reliable even during periods of high network demand.

Advanced Security Features for Comprehensive Protection Against Network Threats

The Cisco C1921-4SHDSL/K9 includes advanced security features such as firewall protection VPN support intrusion prevention and access control mechanisms ensuring that network traffic is protected against cyber threats and unauthorized access while maintaining secure communication across internal and external networks.

Integrated Firewall for Continuous and Real Time Threat Prevention

The built in firewall continuously monitors incoming and outgoing traffic identifying potential threats and blocking malicious activities ensuring that the network remains secure and protected while allowing legitimate communication to proceed without interruption.

Secure VPN Connectivity for Encrypted Data Transmission Across Distributed Networks

The router supports secure VPN connections enabling encrypted communication between branch offices remote users and central systems ensuring data confidentiality integrity and secure transmission across public and private networks.

High Performance Routing Engine for Efficient Data Processing

The Cisco C1921-4SHDSL/K9 is powered by a high performance routing engine that delivers efficient data processing intelligent routing decisions and optimized network throughput ensuring smooth operation of applications and reliable communication across all connected devices and services.

Intelligent Traffic for Prioritized Data Flow and Improved Network

The router uses intelligent traffic management techniques to prioritize critical applications ensuring that essential services receive adequate bandwidth reducing congestion and improving overall network efficiency and responsiveness.

Quality of Service Capabilities for Consistent Performance of Voice Video and Data Applications

The Quality of Service features allow prioritization of latency sensitive applications such as voice and video ensuring consistent performance reduced delay and improved communication quality across enterprise networks.

Modular Design for Flexible Network Expansion

The Cisco C1921-4SHDSL/K9 features a modular design that allows organizations to expand and customize their network infrastructure by adding additional modules or interfaces enabling flexibility and scalability to meet evolving business requirements.

Additional Interface Modules to Enhance Connectivity and Functionality

The router supports a variety of expansion modules allowing organizations to add additional WAN LAN or voice interfaces ensuring that the device can be tailored to specific operational needs and deployment scenarios.

Scalable Architecture for Long Term Growth and Investment Protection

The modular architecture ensures that organizations can scale their network infrastructure over time without replacing existing hardware providing long term investment protection and enabling seamless adaptation to changing technological requirements.

Centralized Network Management for Simplified Administration

The Cisco C1921-4SHDSL/K9 supports centralized management tools that allow administrators to configure monitor and manage network operations from a single interface improving efficiency reducing complexity and ensuring consistent performance across all connected devices.

Remote Capabilities for Efficient Network Control Across Distributed Locations

The router enables remote management allowing administrators to access and control network settings from centralized locations ensuring quick issue resolution and minimizing downtime across branch office environments.

Continuous Network Analysis and Optimization

The device provides advanced monitoring capabilities enabling administrators to analyze network performance identify bottlenecks and implement optimization strategies ensuring efficient resource utilization and improved reliability.

Compact and Rack Mountable Design for Flexible Deployment

The Cisco C1921-4SHDSL/K9 features a compact and rack mountable design that allows deployment in various environments including office spaces data centers and branch locations ensuring efficient use of available space and easy integration into existing network infrastructure.

Structured Installation for Organized Network Infrastructure and Simplified

The rack mountable form factor supports organized installation within network racks improving accessibility and simplifying maintenance and upgrade processes while ensuring a clean and professional infrastructure layout.

Durable Hardware Design for Long Term Reliability and Continuous Operation

The robust construction ensures long term reliability allowing the router to operate continuously under demanding conditions while maintaining consistent performance and minimal maintenance requirements.

Enhanced Business Continuity Through Reliable SHDSL Connectivity

The Cisco C1921-4SHDSL/K9 enhances business continuity by providing reliable SHDSL connectivity secure communication channels and consistent routing performance ensuring that organizations can maintain operations even in challenging network environments where traditional connectivity options are limited.

Stable WAN Connectivity for Continuous Access to Critical Business Applications

The SHDSL connectivity ensures stable WAN access enabling organizations to maintain continuous communication and access to essential applications and services without interruptions.

Dependable Support for Mission Critical Operations Across Enterprise Networks

The router ensures dependable support for mission critical operations enabling organizations to maintain productivity service quality and operational efficiency across all business processes and applications.

Productivity Through Secure High Performance Networking Capabilities

The Cisco C1921-4SHDSL/K9 supports improved collaboration and productivity by providing secure high performance networking capabilities that enable seamless communication efficient data sharing and reliable access to business resources across distributed teams and organizational units.

Data Sharing Across Branch Offices and Remote Teams for Enhanced Collaboration

The router enables efficient data sharing across branch offices and remote teams ensuring that employees can access information quickly and collaborate effectively without delays or connectivity issues.

Consistent Communication Infrastructure for Enterprise Grade Business Operations and Service Delivery

The system provides a consistent communication infrastructure supporting enterprise grade operations and enabling organizations to maintain stable connectivity and efficient workflow execution across all business environments.