Cisco 633 Router
Cisco 633 SDSL Router Modem
- channel service unit/digital service unit (CSU/DSU) modem converts frame relay (FR) frames into asynchronous transfer mode (ATM) cells
- performs Frame Relay Forum (FRF.8) service interworking by translating FR-encapsulated data into ATM data and transports it over a symmetrical digital subscriber line (SDSL).
- achieve rates of 1.168 Mbps up and downstream
