United States
Name:
CISCO1841-ADSL2-B
- Description:
- 1841 bundle,HWIC-ADSL-B/ST,IP BB,64F/256D
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3 Year Extended Warranty
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3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
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In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
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Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
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CISCO1841-ADSL2-B Overview
CISCO1841-ADSL2-B is a high-performance, fixed-architecture router designed specifically for branch office connectivity, featuring an integrated ADSL2 modem that supports DSL broadband. It provides versatile power options with an AC power supply and offers a combination of WAN and LAN interfaces to ensure reliable connectivity which is essential for data, voice, and video services.
The router is equipped with integrated security and VPN features, as well as modular expansion capabilities via EHWIC/NIM slots to tailor interfaces for additional services. With robust throughput performance, built-in firewall functions, and support for industry-standard routing protocols, the CISCO1841-ADSL2-B is ideally suited for business-critical applications requiring secure remote access and consistent performance.
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CISCO1841-ADSL2-B Specifications
| Product Type | Enterprise Router |
| VPN Support | IPSec / SSL VPN |
| Power Source | AC Power Supply |
| Routing Protocols | OSPF / EIGRP / RIP / Static Routing |
| Broadband | DSL |
| Architecture | Fixed |
| WAN Configuration | WAN |
| WAN Ports | 1 WAN |
| LAN Ports | N/A |
| Ethernet Technology | 10/100 |
| Wi-Fi Standard | N/A |
| Connectivity Type | Wired / Ethernet |
| Network Protocols | IPv4 / IPv6 |
| Remote Management | Telnet / SSH / SNMP |
| Compliance Standards | FCC / CE |
| Wireless Support | No |
| Speed/Capacity | N/A |
| Firewall Features | Yes |
| Features | VPN / IPv6 Compatible / Firewall |
| Use Case | Business |
| Management | Managed |
| Form Factor | Rack-mount |
| Integrated Services | Voice / Video |
| High Availability Support | Not Supported |
| Safety | UL Listed |
| EMC | FCC Part 15 |
| Telecom | N/A |
| Throughput Capacity | 0.025 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 | 128 MB |
| Flash Memory | 256 MB |
| Interface Ports | RJ-45 |
| Power | 60 W |
| Device Type | Router |
| Product Name | Cisco 1841 ADSL2-B Router |
| Height | 1.7 inches |
| Width | 19.0 inches |
| Depth | 16.0 inches |
| Weight | 13 lbs |
CISCO1841-ADSL2-B Use Case
Secure VPN Connectivity for Remote Branch Offices
A finance firm’s remote office deploys the CISCO1841-ADSL2-B-1841 bundle with HWIC-ADSL-B/ST, IP BB bandwidth management and 64F/256D performance class to establish an ADSL2 MPLS VPN with QoS. This configuration ensures encrypted, low-latency communication to HQ, boosting data security and reducing latency by 40%.
Uninterrupted POS Transactions in Retail Environments
A national retailer uses the CISCO1841-ADSL2-B-1841 bundle (HWIC-ADSL-B/ST, IP BB, 64F/256D) to power POS terminals and real-time inventory sync over dedicated ADSL2 lines. The solution delivers consistent throughput, 24/7 availability and prioritized traffic, cutting transaction failures by 30%.
Reliable IoT Telemetry for Industrial Sites
An energy provider integrates the CISCO1841-ADSL2-B-1841 bundle with HWIC-ADSL-B/ST interface, IP BB service and 64F/256D class for remote pump station SCADA data. The setup ensures robust ADSL2 connectivity with QoS-driven low-latency telemetry, improving incident response times by 50% and minimizing downtime.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Fixed | Fixed | Fixed |
| Broadband | N/A | N/A | DSL | DSL | DSL |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention | Firewall, Intrusion Prevention | Firewall / Intrusion Prevention | Firewall |
| Compliance Standards | FCC / CE | FCC, CE | IEEE 802.3, 802.3u, 802.3ab | FCC / CE | FCC / CE |
| Connectivity Type | Wired / Wireless / Ethernet | Wired | Wired | Wired / Ethernet | Wired |
| Depth | 11.5 inches | N/A | 13 inches | 16.0 inches | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | FCC, CE | FCC Part 15 | N/A |
| Ethernet Technology | 10/100 | 10/100 | 10/100/1000 | 10/100 | 10/100 |
| Expansion Slots | EHWIC | EHWIC | NIM, EHWIC | EHWIC / NIM | HWIC / NIM |
| Features | VPN / VoIP / IPv6 Compatible / Firewall | VPN, Voice, Video, IPv6 Compatible, Firewall | VPN, VoIP, IPv6 Compatible, Firewall, MPLS | VPN / IPv6 Compatible / Firewall | VPN / IPv6 Compatible / Firewall |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 128 MB |
| Form Factor | Rack-mount | Desktop | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.7 inches | N/A | 1.75 inches | 1.7 inches | N/A |
| High Availability Support | Not Supported | Supported | Supported | Not Supported | Supported |
| Integrated Services | Voice / Video | Voice, Video | Voice, Video, WAN Optimization | Voice / Video | Voice / Video |
| Interface Ports | RJ-45 | RJ-45 | RJ-45, Combo Ports | RJ-45 | RJ-45 |
| LAN Ports | 2 LAN Ports | 4 LAN Ports | 4 LAN Ports | N/A | 2 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 512 MB | 256 MB | 512 MB | 128 MB | 128 MB |
| Modular Slots Available | 2 Slots | 1 Slot | 2 Slots | 2 Slots | 2 Slots |
| Network Protocols | IPv4, IPv6, TCP/IP, UDP, NAT, PPPoE | IPv4, IPv6 | IP, TCP, UDP, HTTP, SNMP | IPv4 / IPv6 | OSPF / EIGRP / RIP / Static Routing |
| Power | 65 Watt | 65 W | 150W | 60 W | 65 Watt |
| Power Source | AC Power Supply | AC Power Supply / Redundant | AC Power Supply with Redundant Option | AC Power Supply | AC Power Supply |
| Product Name | CISCO1801W-AG-C/K9 | C1861-SRST-C-B/K9 | Cisco 1802 Integrated Services Router | Cisco 1841 ADSL2-B Router | CISCO1841-SHDSL-V3 |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | CLI, SNMP, HTTP, HTTPS | HTTP, HTTPS, SSH, Telnet | Telnet, SSH, SNMP, HTTPS | Telnet / SSH / SNMP | Telnet / SSH |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | UL, CE | UL Listed | N/A |
| Speed/Capacity | N/A | N/A | Gigabit | N/A | N/A |
| Stacking Capability | No | No | Yes | No | No |
| Telecom | N/A | N/A | ETSI | N/A | N/A |
| Throughput Capacity | 0.075 Gbps | 0.02 Gbps | 1 Gbps | 0.025 Gbps | 0.03 Gbps |
| Use Case | Enterprise / Business | Enterprise, Small Business | Enterprise / Business | Business | Enterprise |
| VPN Support | IPSec / SSL VPN / DMVPN | IPSec VPN / N/A | IPSec / SSL VPN | IPSec / SSL VPN | IPSec |
| WAN Configuration | WAN | WAN | Dual WAN | WAN | WAN |
| WAN Ports | 1 WAN | 1 WAN | 2 WAN | 1 WAN | 1 WAN |
| Weight | 9.3 lbs | N/A | 15 lbs | 13 lbs | N/A |
| Wi-Fi Standard | WiFi 4 | N/A | N/A | N/A | N/A |
| Width | 17.2 inches | N/A | 17 inches | 19.0 inches | N/A |
| Wireless Support | Yes | No | No | No | No |
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Questions & Answers
Q
What is the Cisco 1841 ADSL2-B bundle?
A
The Cisco 1841 ADSL2-B bundle combines a Cisco 1841 Integrated Services Router with a HWIC-ADSL-B/ST module, delivering ADSL2 IP broadband, integrated security, and advanced routing for small branches.
Q
Which broadband technologies does CISCO1841-ADSL2-B support?
A
It supports ADSL2 and ADSL2+ on the HWIC-ADSL-B/ST module, enabling downstream speeds up to 24 Mbps and upstream speeds up to 3.5 Mbps over existing copper infrastructure.
Q
What routing performance does the Cisco 1841 deliver?
A
The Cisco 1841 delivers up to 85 Mbps forwarding performance, supports 64 000 Fast NAT sessions and 256 000 Delayed NAT sessions for reliable branch connectivity.
Q
What hardware components are included in the 1841 bundle?
A
The bundle includes the Cisco 1841 chassis, AC power supply, one HWIC-ADSL-B/ST module, 128 MB DRAM, 16 MB Flash and mounting brackets.
Q
What security features are integrated in the CISCO1841-ADSL2-B?
A
It provides a stateful firewall, IPsec VPN, intrusion prevention, and access control lists (ACLs) to secure branch networks against external threats.
Q
How do I configure the HWIC-ADSL-B/ST module?
A
Install the module, connect the DSL line, access the IOS CLI, then use 'controller sdsl 0' to configure VPI/VCI, encapsulation and authentication parameters.
Q
Does the Cisco 1841 support Quality of Service (QoS)?
A
Yes. It features Modular QoS CLI with traffic shaping, policing, class-based queuing and low-latency queuing to prioritize voice, video and critical applications.
Q
What is the power consumption of the Cisco 1841?
A
Under full load it consumes approximately 25.5 W to 38 W, accepts 100–240 VAC input and operates between 0 °C and 40 °C ambient temperature.
Q
Which Cisco IOS Software runs on the 1841 ADSL2 bundle?
A
It ships with Cisco IOS 12.4(15)T or later, supporting advanced routing, security and VPN features, with options to upgrade to newer IOS releases.
Q
Can the Cisco 1841 scale for future branch growth?
A
Yes. It offers two HWIC slots and optional daughter cards, allowing you to add WAN interfaces, voice modules or enhanced security features as needs evolve.
Q
What deployment scenarios suit the Cisco 1841?
A
Ideal for small to medium branch offices, retail sites and remote teleworker setups that require secure ADSL2 connectivity, integrated routing and VPN services.
Q
How many VLANs does the Cisco 1841 support?
A
It supports up to 16 hardware-based VLANs per switch module and unlimited logical subinterfaces on WAN ports for granular network segmentation.
Q
What warranty and support options are available?
A
Cisco provides a limited lifetime hardware warranty, one year of Cisco.com support, and optional SmartNet service for 24/7 technical support and software updates.
Q
Is the HWIC-ADSL-B/ST module backward compatible?
A
Yes. The module is backward compatible with ADSL and G.DMT standards, ensuring seamless operation on existing DSL networks and copper lines.
Q
How can I verify ISP compatibility with this router?
A
Contact your service provider to confirm support for ADSL2/2+ with specific VPI/VCI values and Annex A/B standards; most major ISPs support Cisco ADSL modules.
Q
Where can I purchase the CISCO1841-ADSL2-B bundle?
A
Authorized Cisco resellers and leading e-commerce platforms carry the CISCO1841-ADSL2-B. Verify SKU availability, warranty terms and software licenses before ordering.
