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Outline:. Comparison between PDH and SDH. STM-N frame structure. Multiplexing of of 140Mb/s, 34Mb/s and 2Mb/s signals into STM-N frame. Common NE of SDH network. SDH network structure and network protection mechanism. Management, monitoring and alarms. - PowerPoint PPT Presentation
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Outline:• Comparison between PDH and SDH.• STM-N frame structure. • Multiplexing of of 140Mb/s, 34Mb/s and 2Mb/s signals into STM-N frame.• Common NE of SDH network.• SDH network structure and network protection mechanism.• Management, monitoring and alarms.
Comparison between PDH and SDHPoint of comparisonPDHSDH
Electrical & Optical
Interface
No universal
standard
universal
standard
multiplexing
method
complexsimple
Operation ,
administration
& Maintenance
Poor
administration
High
administration
CompatibilityIncompatible with other signals (ATM,
FDDI &DQDB)
compatible with other signals (ATM, FDDI
&DQDB)
BandwidthSave B.WHigh B.W
CoastLow coastHigh coast
Electrical interfacePDH
SDHElectrical interface
Multiplexing Method
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