| Feature hierarchy | Feature Name |
|---|---|
| T1/E1 Interfaces (TDM) / | CESoPSN encapsulation support extended to 16-Port Channelized E1/T1 Circuit Emulation MIC |
| T1/E1 Interfaces (TDM) / | Extends signaling support for SAToP/CESoPSN for E1/T1 interfaces |
| T1/E1 Interfaces (TDM) / | Extends support for OAM features to 16-port Channelized E1/T1 Circuit Emulation MIC |
| T1/E1 Interfaces (TDM) / | Extends support for SAToP features to 16-port Channelized E1/T1 Circuit Emulation MIC |
| T1/E1 Interfaces (TDM) / | Extends support for diagnostic features to 16-port Channelized E1/T1 Circuit Emulation MIC |
| T1/E1 Interfaces (TDM) / | Extends support for encapsulating TDM signals as pseudowires for E1/T1 Circuit Emulation MIC |
| T1/E1 Interfaces (TDM) / | Fractional T1/E1 interface |
| T1/E1 Interfaces (TDM) / | Larger delay buffers for channelized T1/E1 interfaces |
| T1/E1 Interfaces (TDM) / | Separate alarm category for T1 CRC errors |
| T1/E1 Interfaces (TDM) / | Timing features for 16-port Channelized E1/T1 Circuit Emulation MIC |