Cisco C1861-SRST-B/K9-RF | 1861 Integrated Services Router

1. Dimensions: 1.75 x 17.5 x 12.8 inches
2. Weight: 13.2 lbs
3. Interfaces: 2 x 10/100BASE-T Fast Ethernet, 2 x FXS, 2 x FXO, 4 x E&M, 4 x DID, 1 x ISDN BRI S/T, 1 x ISDN BRI U
4. WAN Interface: 1 x ADSL over POTS or G.SHDSL
5. RAM: 512 MB
6. Flash Memory: 256 MB
7. VPN Support: IPSec, SSL VPN
8. Firewall Protection: Stateful packet inspection (SPI), Access control lists (ACLs)
9. Quality of Service (QoS): Class-Based Weighted Fair Queuing (CBWFQ), Low Latency Queuing (LLQ), Weighted Random Early Detection (WRED)
10. Management Protocols: SNMP, Telnet, HTTP, HTTPS, SSH, RADIUS, TACACS+
11. Power Consumption: 70W
12. Operating Temperature: 32 to 104°F (0 to 40°C)

Notes:
1. The router supports up to 50 VPN tunnels for secure remote access.
2. The Cisco 1861 can be used as a voice gateway for small to medium-sized businesses.
3. The router is designed for easy deployment and management, with a web-based GUI and command-line interface.