CISCO 15454-DS3N-12 15454 12-PORT DS3 MODULE, 1:N PROTN
Product Description
The DS3-12 card provides 12 Telcordia-compliant GR-499 DS-3 ports per card. Each port operates at 44.736 Mbps over a single 75-ohm, 728A or equivalent coaxial span and can also provide 1:N (N <= 5) protection.