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CISCO1841-ADSL2-I |
Description: | 1841 ADSLoISDN bdle, HWIC-1ADSLI, IP Base, 64F/256D" |
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GTIN: | 632102467841 ![]() |
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CISCO1841-ADSL2-I Overview
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.
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CISCO1841-ADSL2-I Specifications
Product Type | Enterprise Router |
VPN Support | IPSec / SSL VPN / GRE |
Power Source | AC Power Supply |
Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing |
Broadband | DSL |
Architecture | Fixed |
WAN Configuration | WAN |
WAN Ports | 1 WAN (ADSL2) |
LAN Ports | 2 LAN Ports |
Ethernet Technology | 10/100 Fast Ethernet |
Wi-Fi Standard | N/A |
Connectivity Type | Wired |
Network Protocols | IP |
Remote Management | Telnet / SSH / SNMP |
Compliance Standards | FCC / CE |
Wireless Support | No |
Speed/Capacity | N/A |
Firewall Features | Yes |
Features | VPN / Firewall / IPv6 Compatible |
Use Case | Enterprise / Small Business |
Management | Managed |
Form Factor | Desktop / Rack-mount |
Integrated Services | Voice / WAN Optimization |
High Availability Support | Not Supported |
Safety | N/A |
EMC | N/A |
Telecom | N/A |
Throughput Capacity | 35 Mbps |
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 / ADSL |
Power | 75 Watt |
Device Type | Router |
Product Name | CISCO1841-ADSL2-I |
Height | N/A |
Width | N/A |
Depth | N/A |
Weight | N/A |
Quality Certifications
To get the detailed certification, please go to the Compliance Center.







Product Comparison Table
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Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
Connectivity Type | Wired | Wired | Wired | Wired | Wired |
Broadband | N/A | DSL | N/A | Fiber Optic, DSL, LTE | Fiber Optic / 4G / N/A |
Power Source | AC Power Supply / Redundant | AC Power Supply | AC Power Supply | AC Power Supply with Redundant Option | AC Power Supply / Redundant |
Architecture | Fixed | Fixed | Fixed | Modular | Modular |
WAN Configuration | WAN | WAN | Dual WAN | Dual WAN | Dual WAN |
WAN Ports | 1 WAN | 1 WAN (ADSL2) | 2 WAN | 2 WAN | 2 WAN |
LAN Ports | 4 LAN Ports | 2 LAN Ports | 4 LAN Ports | 8 LAN Ports | 8 LAN Ports |
Ethernet Technology | 10/100 | 10/100 Fast Ethernet | 10/100 | 10/100/1000 | 10/100/1000 |
Wi-Fi Standard | N/A | N/A | N/A | WiFi 6 | N/A |
Wireless Support | No | No | No | No | No |
Speed/Capacity | N/A | N/A | Fast Ethernet | Gigabit | Gigabit |
Routing Protocols Supported | - | - | - | - | - |
VPN Support | IPSec VPN / N/A | IPSec / SSL VPN / GRE | IPSec / GRE / DMVPN | IPSec, SSL VPN, GRE | IPSec / SSL VPN / DMVPN / N/A |
Firewall Features | Yes | Yes | Yes | Yes | Yes |
Features | VPN, Voice, Video, IPv6 Compatible, Firewall | VPN / Firewall / IPv6 Compatible | VPN / IPv6 Compatible / Firewall / Voice | VPN, Firewall, IPv6 Compatible, POE | VPN, Firewall, MPLS, IPv6 Compatible |
Use Case | Enterprise, Small Business | Enterprise / Small Business | Small Business / Enterprise | Enterprise | Enterprise |
Management | Managed | Managed | Managed | Managed | Managed |
Form Factor | Desktop | Desktop / Rack-mount | Rack-mount | Rack-mount | Rack-mount |
Integrated Services | Voice, Video | Voice / WAN Optimization | Voice / Video | Voice, Video, WAN Optimization | Voice, Video |
High Availability Support | Supported | Not Supported | Not Supported | Supported | Supported |
Throughput Capacity | 0.02 Gbps | 35 Mbps | 25 Mbps | 2 Gbps | 10 Gbps |
QoS Features | Supported | Supported | Supported | Supported | Supported |
Built-in Security Features | Firewall, Intrusion Prevention | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection | Firewall, Intrusion Prevention, Malware Protection | Firewall, Intrusion Prevention |
Expansion Slots | EHWIC | EHWIC / NIM | EHWIC | NIM, SFP+ | NIM, SFP+ |
Modular Slots Available | 1 Slot | 2 Slots | 2 Slots | 3+ Slots | 3+ Slots |
Stacking Capability | No | No | No | Yes | Yes |
5G Support | No | No | No | No | No |
Memory | 256 MB | 128 MB | 256 MB | 4 GB | 4 GB |
Flash Memory | 256 MB | 256 MB | 128 MB | 512 MB | 512 MB |
Interface Ports | RJ-45 | RJ-45 / ADSL | RJ-45 | RJ-45, SFP | RJ-45, SFP+ |
Device Type | Router | Router | Router | Router | Router |
Product Name | C1861-SRST-C-B/K9 | CISCO1841-ADSL2-I | Cisco 1803/K9 Integrated Services Router | AFi-HD Enterprise Router | ME0P03BASA70 Modular Enterprise Router |
Height | N/A | N/A | 1.75 inches | 1.75 inches | 2 inches |
Width | N/A | N/A | 17 inches | 17.5 inches | 17 inches |
Depth | N/A | N/A | N/A | 15 inches | 18 inches |
Weight | N/A | N/A | 6.6 lbs | 18 lbs | 15 lbs |
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