Support for channelized OC-3 to T1, channelized STM-1 to E1, clear channel T3/E3, subrate T3/E3, full-rate T1, clear channel E1, channelized T1/E1, and fractional T1/E1
Up to 84 T1 (or 3 T3) ports, 63 E1 (or 3 E3) ports, or 1024 nxDS-0 channels
Support for all major encapsulations including Multilink Point-to-Point Protocol (MLPPP) and Multilink Frame Relay (MLFR)
Support for link fragmentation and interleaving (LFI) over Frame Relay (FRF.12) and MLPPP
Support for both 1+1 SONET Automatic Protection Switching (APS) and SDH Linear Multiplexer Section Protection (MSP) protocols