1E1=2.048Mbps
STM1=63 E1...
AND STM4=4*STM1=63*4E1s
bUT ITS NOT THAT EASY...
In SDH there is a lot of header data...
STM1 =155.52Mbps
STM4=622.08Mbps
STM16=2488Mbps
STM64=9953Mbps....
There are 63 e1's in sdh STM-1 = 63 x E1; STM-4 = 63 x 4 E1; STM-16 = 63 x 16 E1; STM-64 = 63 x 64 E1.
STM-0= 21 E1 lines STM-1=(64x1) - 1 = 63 E1 lines STM-4=(64x4) - 4 = 252 E1 lines STM-16=(64x16) - 16 = 1008 E1 lines STM-64=(64x64) - 64 = 4032 E1 lines and so on
One STM-4 support Maximum 268 E1's.
There are 63 E1 in one STM 1
STM-4 have the data rate 622.08Mbps. And STM-4 support 269 E1's.
1E1=2.048MbpsSTM1=63 E1...AND STM4=4*STM1=63*4E1sbUT ITS NOT THAT EASY...In SDH there is a lot of header data...STM1 =155.52MbpsSTM4=622.08MbpsSTM16=2488MbpsSTM64=9953Mbps....
The Data rate of one E1 is 2048 bps which have 32 voice channels.And STM is a multiplexing of E1's in SONET we say STM-4 is equal to OC-12 both have same data rates i.e. 622.08 Mbps it support 269 E1's. STM-1 or OC-3 supports 67 E1's data rate (155.52 Mbps).
4 tiles F4-E1-U1-D2
A lot
In sdh radio 63 E1's are there
2 mb
Synchronous Transport Module (STM) currently has levels 1, 4, 16, 64, 256 and 1024 where each level corresponds to a specific bit rate. The STM frame is considered as the basic transmission format for the Synchronous Digital Hierarchy (SDH) technology. These STM frames are byte-oriented arranged in a row and column manner.