The Cisco 1841 Integrated Services Router is part of the Cisco 1800 Integrated Services Router Series which complements the Integrated Services Router Portfolio.

The Cisco 1841 Integrated Services Router provides the following support:
- Wire-speed performance for concurrent services at T1/E1 WAN rates
- Enhanced investment protection through increased performance and modularity
- Enhanced investment protection through increased modularity
- Increased density through High-Speed WAN Interface Card Slots (two)
- Support for over 90 existing and new modules
- Support for majority of existing WICs, VWICs, and VICs (data mode only)
- Two Integrated 10/100 Fast Ethernet ports
Security
- On-board encryption
- Support of up to 800 VPN tunnels with the AIM-EPII-PLUS Module
- Antivirus defense support through Network Admission Control (NAC)
- Intrusion Prevention as well as stateful Cisco IOS Firewall support and many more essential security features

Specification

Product
Product id	138306
Brand	Cisco Systems
Partnr	CISCO1841-HSEC/K9
EAN/UPC code	746320966816
Ethernet LAN features
Ethernet LAN	Y
Full duplex	Y
Network
Networking standards	IEEE 802.3af
Cabling technology	10/100Base-T(X)
Ethernet LAN data rates	10, 100 Mbit/s
Data transfer rate	100 Mbit/s
Wireless LAN features
Wi-Fi	N
DSL features
DSL connection type	N
Management features
Web-based management	Y
Ports & interfaces
WAN connection	Ethernet (RJ-45)
Ethernet LAN (RJ-45) ports	2
USB ports quantity	1
DC-in jack	Y
Protocols
Routing protocols	BGP
Security
Security algorithms	3DES, DES
Firewall security	Y
Technical details
Rack mounting	Y
Form factor	1U
Supports ISDN connection	N
Features
Flash memory	64 MB
Internal memory	256 MB
Design
LED indicators	Y
Power
Power consumption (typical)	50 W
Operational conditions
Operating temperature (T-T)	0 - 40 °C
Storage temperature (T-T)	-25 - 65 °C
Operating relative humidity (H-H)	10 - 85 procent
Storage relative humidity (H-H)	5 - 95 procent
Weight & dimensions
Weight	2800 g
Other features
Maximum data transfer rate	0.1 Gbit/s
Dimensions (WxDxH)	343 x 274 x 47.5 mm
Connectivity technology	Wired
Non-operating relative humidity (non-condensing)	5 - 95 procent