CISCO2503-CH Cisco 2503 Router 1 x 10Base-5 AUI 2 x Serial 1 x ISDN
Cisco 2500 Series 2503 Router | eBay
Cisco 2500 Router products
My grandfather gave me a Cisco 2500 series router and it looks like it predates Ethernet. How can I get this working? What are all these ports, what signals do they use,
Router Cisco 2500 Series - Model 2503 Massamá E Monte Abraão • OLX Portugal
Cisco 2503 - Router Clustering Technology Other Types of Equipment