The Cisco Channelized T1/E1 SPA is designed to provide a full 8-port channelized solution for the Cisco 7600 Series Routers. The interfaces can be channelized, fractional, or unframed (E1) with up to 256 independent High-Level Data Link Control (HDLC) channels definable for T1 and E1 applications. With these capabilities, the Cisco Channelized T1/E1 SPA eliminates the need for separate interface types for separate connection requirements.