SDH hierarchy-STM0,STM1,STM4,STM16,STM64,STM256 and mapping with E1,E4

The page covers synchronous SDH hierarchy STM0, STM1, STM4, STM16, STM64 and STM256 bit rates. It mentions mapping with E1 and E4 carrier system.

SDH Terminology	Bit rate	Abbreviated bit rate	SDH capacity
STM0	51.84 Mbits/sec	51 Mbps	21 E1
STM1	155.52 Mbits/sec	155 Mbps	63 E1 or 1 E4
STM4	622.08 Mbits/sec	622 Mbps	252 E1 or 4 E4
STM16	2488.32 Mbits/sec	2.4 Gbps	1008 E1 or 16 E4
STM64	9953.28 Mbits/sec	10 Gbps	4032 E1 or 64 E4
STM256	39813.12 Mbits/sec	40 Gbps	16128 E1 or 256 E4

RF and Wireless Terminologies