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It's not.

-- The E1 line rate is 2.048 Mb/s.

-- The data rate of 63 E1s, simply time multiplexed, would be 63 x 2.048 = 129.024 Mb/s

-- 64 E1s may be multiplexed into a single E4 stream, at a rate of 139.264 Mb/s.

-- The STM1 data rate is 155.52 Mb/s. Any combination of data streams totaling

roughly that rate, including as many as perhaps 75 E1s, could be packaged for

transport on an STM1 facility.

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11y ago
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Anthony Edwine

Lvl 2
1y ago

In mapping of PDH Signals into SDH is true.

SDH supports only 63 E1 ports for STM-1.

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Q: Why 63 E1 is equal to STM1?
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Related questions

How many e1s make STM1?

63 E1


How many E1 in STM 4?

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....


How many E1 in STM-4?

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....


Have a confusion that one STM1 has 63 E1. Size of E1 is 2.048Mbps. then size of one STM1 should be equals 63x2.048 equals 129.024Mbps. but in real STM1 is 155Mbps?

E1 is carried inside C-12 container in SDH enviroment. Size of container is bigger than payload requirment of E1 in order to have clock alignment, justification opportunity bits, justification control bits, & overhead bits. C-12 container is 272 bits which multplies with 8000 (frames per second) to get data rate for one C-12 per second. Multiplying it with 63 will give you 137.088 Mbps.


How many E1 lines does PDH has?

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.


How many E1 in an SDH radio?

In sdh radio 63 E1's are there


How many E1 in one STM 1?

There are 63 E1 in one STM 1


What is E1 capacity for PDH and SDH?

63


How many DS3 in STM1?

3 ds3 in stm1


How many E1 in STM-0?

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


.63 is equal to?

63%


What is the equal factor of 63?

63 has a square factor, but no equal ones.