Before you buy, compare this series with our newer 4000 Series ISRs, which provide network, compute, and built-in WAN services at up to 10 times the performance of previous-generation ISRs.
- Take advantage of our free network inventory service to see if you have obsolete or end-of-support equipment you may want to replace. Learn more about Cisco Active Advisor.
- See why now is the time to evolve your WAN. Download the latest white paper from ZK Research, then speed deployment with our design guide. Get started.
Deliver Integrated Services to Branch Offices and SMB
View Interactive 3D Models of the Cisco 3845 Integrated Services Router 
and the Cisco 3825 Integrated Services Router 
The award-winning Cisco 3800 Series integrated services routers, ideal for medium-sized to large businesses and enterprise branch offices, enable you to simplify deployment and management, lower the costs and complexities of your network, and support mission-critical business applications, by providing a highly secure platform with concurrent T3/E3 wire-speed delivery of:
Cisco 3800 Series routers deliver the performance, availability, and reliability required for scaling mission-critical business applications in the most demanding enterprise environments, with features such as:
- Built-in security
- Cisco Router and Security Device Manager (SDM) for simplified management
- A modular platform with a broad range of interface options
- Up to two 10/100/1000 Mbps built-in routed ports
- Up to 112 10/100 Mbps switch ports with optional Power over Ethernet (PoE), for providing DC power to network devices such as IP phones
- Up to 2500 VPN tunnels
- Cisco CallManager Express call-processing support for up to 240 Cisco IP phone users
- Cisco Survivable Remote Site Telephony (SRST) support for up to 720 Cisco IP phone users, allowing the router to provide call-processing functionality to keep voice service in operation should the connection to Cisco CME be lost
- Support for wireless LAN standards 802.11a/b/g
- Support for a Small Form-Factor Pluggable (SFP) port for Gigabit Ethernet
- Built-in redundant power supply (on 3845 model)
Featured Content
Reduce Total Cost of Ownership with Cisco ISRs (flash module) 
Cisco ISRs are high on integration and low on TCO.
Branch Office TCO Study
Optimizing Branch-Office Network Infrastructure Total Cost of Ownership with Cisco Integrated Services Routers.
TCO Study | TCO Presentation (PDF - 464 KB) 
Product Support Services
Cisco's Services can help you increase operational efficiency, lower support costs, and improve availability risk management.
Related Versions and Product Literature
Learn about the similarities and differences of the models within this product series.
Models
Data Sheets and Literature
Bulletins
Data Sheets
End-of-Life and End-of-Sale Notices
Presentations
Promotions
Q&A
White Papers
