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SDH working in real life

SDH working in real life

Created: Feb 2, 2022 00:17:00Latest reply: Feb 6, 2022 05:17:26 167 4 1 0 0
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Let's say a 2Mbps signal is coming. Now, where does this whole process of Mapping, Aligning, and Multiplexing takes place in the SDH Network? Does this take place on the tower, on the RNC, where does this first 2Mbps signal enter and get mapped into VC-12 and further multiplexed?


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SDH Principlessdh and mstp

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liqiang185
Admin Created Feb 2, 2022 02:31:35

Dear friend!
E1 level mapping, alignment, and multiplexing are implemented on the E1 processing board.

The input E1 signals are sent to the decoder through the interface module. After being decoded in the decoder, data signals and clock signals are recovered and sent to the mapping module.

The mapping module asynchronously maps the received E1 signals to C-12 signals, processes the channel overheads to form VC-12s, and processes pointers to form TU-12s. Three TU-12s are multiplexed into TUG-2s, and seven TUG-2s are multiplexed into TUG-3s. The three TUG-3s are multiplexed and inserted with channel overheads and padding bytes to form VC-4s and then sent to the cross-connect unit.

More: Working Principle and Signal Flow

Thank you!

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Gustavo.HdezF
Gustavo.HdezF Admin Created Feb 2, 2022 00:21:30

Hello User. we are reviewing your question and we will answer you shortly. Thanks.
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liqiang185
liqiang185 Admin Created Feb 2, 2022 02:31:35

Dear friend!
E1 level mapping, alignment, and multiplexing are implemented on the E1 processing board.

The input E1 signals are sent to the decoder through the interface module. After being decoded in the decoder, data signals and clock signals are recovered and sent to the mapping module.

The mapping module asynchronously maps the received E1 signals to C-12 signals, processes the channel overheads to form VC-12s, and processes pointers to form TU-12s. Three TU-12s are multiplexed into TUG-2s, and seven TUG-2s are multiplexed into TUG-3s. The three TUG-3s are multiplexed and inserted with channel overheads and padding bytes to form VC-4s and then sent to the cross-connect unit.

More: Working Principle and Signal Flow

Thank you!

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Saqibaz
Saqibaz Created Feb 2, 2022 19:50:23

Thanks for sharing
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user_4411447
user_4411447 Created Feb 6, 2022 05:17:26

good
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