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CISCO1841-ADSL2-I
1841 ADSLoISDN bdle, HWIC-1ADSLI, IP Base, 64F/256D"
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Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
CISCO1841-ADSL2-I is a fixed architecture enterprise router designed for branch connectivity, featuring integrated ADSL2 broadband access along with dedicated WAN and 10/100 Ethernet LAN interfaces. It delivers versatile power options through an AC power supply and integrates advanced services such as voice and WAN optimization to meet demanding networking environments.
Engineered with modular capabilities via two expansion slots supporting EHWIC/NIM modules, this router provides robust VPN features including IPSec, SSL VPN, and GRE for secure remote access. With a throughput capacity of up to 35 Mbps, built-in firewall and QoS features for optimal performance, and a design suited for small business to enterprise use cases, the CISCO1841-ADSL2-I is ideal for reliable, cost-effective branch networking.
CISCO1841-ADSL2-I price is is available on request. Get immediate quote.
Request bulk order quote for CISCO1841-ADSL2-I for additional pricing. Browse the full Router Isr 1800 series or explore all Cisco products.
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| CISCO1841-ADSL2-I |  C1861-UC-4FXO-K9 |  C1861-UC-2BRI-K9 |  C1841-3G-S |  C1861W-SRST-B/K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Fixed | Fixed | Fixed |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, Malware Protection | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, Malware Protection |
| Compliance Standards | FCC / CE | FCC, CE | FCC, CE | FCC / CE / UL | FCC, CE, UL |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired / Wireless |
| Device Type | Router | Router | Router | Router | Router |
| Ethernet Technology | 10/100 Fast Ethernet | 10/100 | 10/100 | 10/100 | 10/100 |
| Features | VPN / Firewall / IPv6 Compatible | VPN / VoIP / Firewall / IPv6 Compatible | VPN, Firewall, Unified Communications | VPN / VoIP / IPv6 Compatible / Firewall | VPN, Firewall, Integrated Services, IPv6 Compatible |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 128 MB | 128 MB | 256 MB | 256 MB |
| Form Factor | Desktop / Rack-mount | Rack-mount | Desktop | Desktop | Desktop |
| High Availability Support | Not Supported | Supported | Not Supported | Not Supported | Supported |
| Integrated Services | Voice / WAN Optimization | Voice | Voice, WAN Optimization | Voice / Video / WAN Optimization | Voice, Video |
| Interface Ports | RJ-45 / ADSL | RJ-45 | RJ-45 | RJ-45 | RJ-45 |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 128 MB | 256 MB | 256 MB | 128 MB | 256 MB |
| Network Protocols | IP | IP | IPv4, IPv6 | IPv4 / IPv6 | IPv4, IPv6 |
| Power | 75 Watt | 60 Watt | 65 W | 65W | 40W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | CISCO1841-ADSL2-I | Cisco 1861 Unified Communications Integrated Services Router (C1861-UC-4FXO-K9) | Cisco 1861 Integrated Services Router UC-2BRI-K9 | Cisco C1841-3G-S Integrated Services Router | Cisco 1861 Wireless Services Router |
| Product Type | Enterprise Router | Integrated Services Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | Telnet / SSH / SNMP | Telnet, SSH, SNMP | Telnet, SSH, SNMP | Telnet / SSH / SNMP | SSH, Telnet, SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Stacking Capability | No | No | No | No | No |
| Throughput Capacity | 35 Mbps | 0.025 Gbps | 0.03 Gbps | 0.025 Gbps | 0.085 Gbps |
| Use Case | Enterprise / Small Business | Business | Business | Enterprise | Business / Small Business |
| VPN Support | IPSec / SSL VPN / GRE | IPSec / SSL VPN | IPSec / SSL VPN | IPSec | IPSec / SSL VPN / DMVPN / GRE |
| WAN Configuration | WAN | WAN | Dual WAN | WAN | Dual WAN |
| WAN Ports | 1 WAN (ADSL2) | 2 WAN | 2 WAN | 1 WAN | 2 WAN |
| Wireless Support | No | No | No | No | Yes |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reliable ADSL/ISDN router with HWIC-1ADSLI. Consistent performance and easy configuration make it ideal for small branch offices.
Cisco 1841-ADSL2-I provides stable connections and predictable uptime. Perfect for daily office networking tasks.
Smooth deployment and solid performance. Handles branch office traffic reliably.
Easy to configure and maintain. Cisco quality ensures long-term stability.
Robust ADSL/ISDN connectivity with dependable routing. Meets small business requirements efficiently.
The Cisco 1841 ADSLoISDN bundle (SKU: CISCO1841-ADSL2-I) is an integrated router package including a Cisco 1841 chassis, HWIC-1ADSLI ADSL2 interface card, IP Base feature set, and 64 MB Flash/256 MB DRAM memory configuration.
The HWIC-1ADSLI module delivers a single-port ADSL2/2+ connection with up to 24 Mbps downstream, 3.5 Mbps upstream, and support for PPPoE, PPPoA, ATM, and VLAN tagging.
With 64 MB Flash and 256 MB DRAM, the Cisco 1841 handles enterprise routing, security, and QoS for up to 50 users, supporting concurrent VPN tunnels and high-throughput WAN connections.
The bundle includes the Cisco IP Base feature set, offering essential routing, NAT, firewall, and management capabilities for branch office deployments.
The Cisco 1841 supports PPPoE, PPPoA, ATM, and IEEE 802.1Q VLAN tagging on the HWIC-1ADSLI ADSL interface for compatibility with major ISPs.
Use the IOS CLI to enable interface atm0/0, set the DSL mode (ADSL2/2+), configure encapsulation (PPPoE/PPPoA), and assign IP addressing under global configuration.
Yes, the Cisco 1841 ADSLoISDN bundle is optimized for SMB and branch offices, providing reliable broadband access, integrated security, and modular expansion options.
The Cisco 1841 measures 11.5″ x 8.8″ x 1.7″ (29.2 x 22.4 x 4.4 cm) and weighs approximately 4.5 lbs (2.0 kg).
Under typical load, the Cisco 1841 consumes up to 50 Watts and supports 100–240 VAC input for global deployments.
Yes, the Cisco 1841 includes two HWIC slots and one WIC slot, allowing addition of ADSL, serial, VPN, or other network interface modules.
With IP Base and hardware crypto acceleration, the Cisco 1841 supports up to 225 site-to-site IPsec VPN tunnels concurrently.
Transfer the new IOS image to Flash via TFTP, FTP, or USB, then update the boot variable in global configuration and reload the router.
Cisco provides a limited lifetime warranty on the chassis, a one-year warranty on modules, and optional SMARTnet support for software updates and hardware replacement.
The Cisco 1841 is in end-of-life status but remains supported under Cisco’s extended software maintenance and SMARTnet service agreements.
Use “show interface atm0/0” and “show dsl interface” to verify link status, validate ISP credentials, check cable connections, and update IOS if needed.
You can buy the Cisco 1841 ADSLoISDN bundle through authorized Cisco partners, resellers, or the Cisco online store using SKU CISCO1841-ADSL2-I.
United States
