Cisco CISCO2504 | 2504 1 x Token Ring 2 x Serial 1 x ISDN BRI WAN Router

1. Interfaces: 1 x Token Ring, 2 x Serial, 1 x ISDN BRI
2. WAN Interface: ISDN BRI
3. Routing Protocol: OSPF, RIP-1, RIP-2, BGP, EIGRP, IGMPv2, IGMP, PIM-SM, PIM-DM, DVMRP
4. Network / Transport Protocol: TCP/IP, AppleTalk, IPX/SPX, NetBEUI/NetBIOS
5. Remote Management Protocol: SNMP, Telnet, HTTP, HTTPS
6. Authentication Method: RADIUS, TACACS+
7. Features: Firewall protection, DHCP support, NAT support, VPN support, PAT support, auto-uplink (auto MDI/MDI-X), manageable, IPv6 support, Intrusion Prevention System (IPS), Quality of Service (QoS), MPLS support, NetFlow, Stateful Packet Inspection (SPI), DiffServ Code Point (DSCP) support, DHCP server, DNS proxy, DHCP relay, DHCP client
8. Flash Memory: 64 MB
9. RAM: 256 MB
10. Power Device: External power adapter
11. Dimensions: 10.6 x 8.3 x 1.8 inches
12. Weight: 2.65 pounds

Notes:
1. The Cisco 2504 router is a reliable and secure choice for small to medium-sized businesses.
2. With support for multiple routing protocols and advanced security features, it offers flexibility and peace of mind.
3. Its compact size and external power adapter make it easy to deploy in a variety of network environments.