The Cisco ASR 903 Router has six interface module slots. There are two types of interface module slots. Four slots support all of the available interface modules. The remaining two slots support only the Gigabit Ethernet and TDM Interface modules, the 10 Gigabit Ethernet modules are not supported in these slots. One of these two slots is limited to a maximum of seven Gigabit Ethernet ports with the Cisco ASR 900 Route Switch Processor (RSP1). Interface Module offers better usage with maximum efficiency and convenience With T1/E1 technology, enjoy up to 2.048Mbps (E-carrier) or 1.544Mbps (T-carrier) data transfer rate over service provider link Wide Area Network interface module scales across thousands of endpoints with centralized management
