United States$5,000,000+
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P
Peter Johnson
5
SHDSL performance is stable and predictable. Works well for locations without fiber or modern broadband options.
C1921-4SHDSL/K9
Cisco 1921 4-pair SHDSL Bundle, HWIC-4SHDSL, IP Base Lic
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Name:
C1921-4SHDSL/K9
- Description:
- Cisco 1921 4-pair SHDSL Bundle, HWIC-4SHDSL, IP Base Lic
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 882658357787
- Condition:
- Warranty:
- 3
- List Price:
$1,995.00
- Price:
$999.0049.9% off
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1
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C1921-4SHDSL/K9 Overview
C21-4SHDSL/K9 is a high-performance integrated services router built on a modular architecture that enables flexibility in deployment. It provides multiple power options with an AC power supply, supports dedicated WAN connectivity via its integrated SHDSL port, and features four built-in LAN RJ-45 interfaces to ensure seamless connectivity for enterprise branch environments.
Designed to support critical integrated services such as VPN, firewall, and voice integration, this device offers robust performance with a throughput capacity of approximately 0.075 Gbps and built-in redundancy features for secure, reliable operations. Its modular expansion capability using EHWIC and NIM slots, combined with comprehensive routing protocols and management features, make it well suited for small business to enterprise use cases.
C1921-4SHDSL/K9 price is $999.00, a 49.9% saving from the Cisco list price of $1,995.00. C1921-4SHDSL/K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for C1921-4SHDSL/K9 for additional pricing. Browse the full Router Isr 1900 series or explore all Cisco products.
C1921-4SHDSL/K9 Specifications
- Product Type
- Enterprise Router
- VPN Support
- IPSec / SSL VPN / DMVPN
- Power Source
- AC Power Supply
- Routing Protocols
- OSPF / BGP / EIGRP / RIP / Static Routing
- Broadband
- DSL
- Architecture
- Modular
- WAN Configuration
- WAN
- WAN Ports
- 1 WAN
- LAN Ports
- 4 LAN Ports
- Ethernet Technology
- 10/100
- Wi-Fi Standard
- N/A
- Connectivity Type
- Wired
- Network Protocols
- IPv4 / IPv6
- Remote Management
- SSH / Telnet / SNMP
- Compliance Standards
- FCC / CE / RoHS
- Wireless Support
- No
- Speed/Capacity
- N/A
- Firewall Features
- Yes
- Features
- VPN / IPv6 Compatible / Firewall
- Use Case
- Enterprise / Small Business
- Management
- Managed
- Form Factor
- Desktop
- Integrated Services
- Voice / Video
- High Availability Support
- Not Supported
- Safety
- N/A
- EMC
- N/A
- Telecom
- N/A
- Throughput Capacity
- 0.075 Gbps
- QoS Features
- Supported
- Built-in Security Features
- Firewall / Intrusion Prevention
- Expansion Slots
- EHWIC / NIM
- Modular Slots Available
- 2 Slots
- Stacking Capability
- No
- 5G Support
- No
- Memory
- 512 MB
- Flash Memory
- 256 MB
- Interface Ports
- RJ-45
- Power
- 65 W
- Device Type
- Router
- Product Name
- Cisco 1921 Integrated Services Router with 4-Port SHDSL
- Height
- 1.73 inches
- Width
- 17.32 inches
- Depth
- 11.10 inches
- Weight
- 8 lbs
C1921-4SHDSL/K9 Use Case
High-Speed Symmetric Connectivity for Remote Branch Offices
A national retail chain deploys Cisco 1921 4-pair SHDSL Bundle (HWIC-4SHDSL, IP Base Lic) to connect 50+ remote outlets. The solution delivers up to 22.8 Mbps symmetric bandwidth over existing copper, enabling real-time POS transactions, centralized inventory management and VoIP without truck rolls. Benefit: rapid deployment, predictable performance and lower OPEX through cost-effective use of legacy lines.
Secure WAN Failover for Financial Services
A regional bank integrates the Cisco 1921 4-pair SHDSL Bundle with MPLS primary links at its data centers and branches. On MPLS outages, HWIC-4SHDSL seamlessly takes over, preserving encrypted IP-Sec tunnels and critical transaction workflows. Benefit: zero-touch failover, regulatory compliance, and guaranteed uptime for high-value financial operations.
Resilient Industrial Automation Network in Manufacturing Plants
An automotive manufacturer implements the Cisco 1921 4-pair SHDSL Bundle to link PLCs and SCADA controllers across multiple factory floors. The IP Base License enables advanced routing and VPN services, while SHDSL ensures deterministic, low-latency control loops. Benefit: enhanced production efficiency, minimized downtime and scalable connectivity for Industry 4.0 initiatives.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 C1921-4SHDSL/K9 |  C1921-3G-S-K9 |  C1941-SEC-SRE/K9 |  C1921-ADSL2-M/K9 |  C1-CISCO1941/K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Fixed | Fixed | Modular | Fixed |
| Broadband | DSL | 3G | N/A | DSL | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall | Firewall / Intrusion Prevention |
| Compliance Standards | FCC / CE / RoHS | FCC / CE | FCC, CE | FCC, CE, RoHS | FCC / CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 11.10 inches | N/A | 12.3 inches | 11.22 inches | 12.5 inches |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | FCC, CE | N/A | N/A |
| Ethernet Technology | 10/100 | 10/100 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | EHWIC / NIM | EHWIC | EHWIC | NIM | EHWIC |
| Features | VPN / IPv6 Compatible / Firewall | VPN / Firewall / IPv6 Compatible / Integrated Services | VPN / IPv6 Compatible / Firewall / Syslog | VPN / Firewall / IPv6 Compatible | VPN / Firewall / IPv6 Compatible / Integrated Services |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 256 MB | 128 MB | 256 MB | 128 MB |
| Form Factor | Desktop | Desktop / Rack-mount | Rack-mount | Rack-mount | Desktop / Rack-mount |
| Height | 1.73 inches | N/A | 1.73 inches | 1.73 inches | 1.73 inches |
| High Availability Support | Not Supported | Supported | Supported | Supported | Not Supported |
| Integrated Services | Voice / Video | Voice / Video / WAN Optimization | Voice / Video / WAN Optimization | Voice | Voice / Video / WAN Optimization |
| Interface Ports | RJ-45 | RJ-45 | RJ-45 | RJ-45 | RJ-45 |
| LAN Ports | 4 LAN Ports | 2 LAN Ports | 4 LAN Ports | 2 LAN Ports | 2 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 512 MB | 256 MB | 512 MB | 256 MB | 256 MB |
| Modular Slots Available | 2 Slots | 1 Slot | 2 Slots | 2 Slots | 2 Slots |
| Network Protocols | IPv4 / IPv6 | IPv4 / IPv6 | IPv4, IPv6 | IPv4, IPv6, MPLS | IPv4 / IPv6 |
| Power | 65 W | 65 Watt | 50 W | 65 W | 54 W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply / DC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | Cisco 1921 Integrated Services Router with 4-Port SHDSL | Cisco 1921 Integrated Services Router (C1921-3G-S-K9) | Cisco 1941 Security Services Router (C1941-SEC-SRE/K9) | Cisco 1921 Integrated Services Router with ADSL2 (C1921-ADSL2-M/K9) | C1-CISCO1941/K9 Cisco 1941 Integrated Services Router |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH / Telnet / SNMP | CLI / SNMP / SSH | SSH, Telnet, SNMP | HTTP/HTTPS, Telnet, SSH, SNMP | Telnet / SSH / SNMP / HTTP / HTTPS |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | UL/cUL | N/A | N/A |
| Speed/Capacity | N/A | Fast Ethernet | N/A | Gigabit | N/A |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | TIA/EIA | N/A | N/A |
| Throughput Capacity | 0.075 Gbps | 100 Mbps | 0.075 Gbps | 0.05 Gbps | N/A |
| Use Case | Enterprise / Small Business | Enterprise / Small Business | Enterprise | Business / Small Business / Enterprise | Enterprise / Business |
| VPN Support | IPSec / SSL VPN / DMVPN | IPSec / SSL VPN / DMVPN | IPSec / SSL VPN / N/A / N/A / N/A / N/A | IPSec / SSL VPN / DMVPN / N/A | IPSec VPN / SSL VPN / DMVPN |
| WAN Configuration | WAN | WAN | Dual WAN | WAN | WAN |
| WAN Ports | 1 WAN | 1 WAN | 2 WAN | 1 ADSL2 Port | 2 WAN |
| Weight | 8 lbs | N/A | 7 lbs | 11.33 lbs | 11.8 lbs |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 17.32 inches | N/A | 17.5 inches | 17.24 inches | 17.1 inches |
| Wireless Support | No | No | No | No | No |
Reviews & Ratings
E
Emily Carter
4
Reliable solution for legacy WAN circuits. Configuration was straightforward and uptime has been excellent.
R
Robert Mills
5
Consistent throughput across bonded SHDSL pairs. Meets our requirements for dependable branch connectivity.
A
Anna Lewis
3
A solid option where SHDSL is still required. It runs reliably with minimal ongoing maintenance.
S
Steven Parker
4
Well-suited for industrial and rural sites. Performance has been steady with no major issues.
Questions & Answers
What is the Cisco 1921 4-pair SHDSL Bundle (SKU C1921-4SHDSL/K9)?
The Cisco 1921 4-pair SHDSL Bundle (C1921-4SHDSL/K9) is an integrated WAN solution comprising a Cisco 1921 Integrated Services Router, an HWIC-4SHDSL high-speed SHDSL interface card, and an IP Base license for advanced routing and security features.
What components are included in the Cisco 1921 4-pair SHDSL Bundle?
The bundle includes a Cisco 1921 ISR chassis, one HWIC-4SHDSL module, an IP Base software license, power supply, rack-mount kit, and access to Cisco IOS Software.
What data rates and line distances does the HWIC-4SHDSL support?
The HWIC-4SHDSL supports symmetrical data rates from 192 kbps to 5.6 Mbps per pair, aggregates up to 22.4 Mbps over four pairs, and covers distances up to 4 km over standard copper wiring.
What are the typical use cases for SHDSL on the Cisco 1921?
Ideal for small to medium enterprises requiring symmetric bandwidth for applications like VPN, VoIP, video conferencing, and cloud access over existing copper infrastructure.