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Telecom Transmiss ransmission ion Made Ma de Simple A telecom blog, created to assist telecom transmission engineers to understand various telecom transmission technologies like SDH,PDH,DWDM, Ethernet, Ethernet over SDH etc. Home
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Tuesday, 12 March 2013
Basic SDH Network Topology & Advantages of SDH
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Let us read about the Basic SDH network topology. topology. Detailed topology discussion will be done later. Basic SDH Network Topology
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SDH networks are usually usually deployed in protected rings . This has the advantage of giving protection to the data, by providing an alternate route for it to travel over in the event of equipment or network failure. Each side of the ring (known as A and B, or sometimes, East and West), consists of an individual individual transmit transmit and receive fibre. These fibres will take take diverse diverse physical paths to the distant end equipment to minimise the risk of both routes failing at the same time.
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The SDH equipment’s have the ability ability to to detect the problem and will automatically will automatically switch to the alternate route.
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SDH multiplexers transmit on both sides of the ring simultaneously, But to speed up switching times, they only receive on one side at any time . This means that only the receiving end needs to switch, thus reducing the impact of a fault on the customers' data.
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In previous post we have seen thelimitations the limitations of of PDH PDH.. Now let us see the advantages of SDH.
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SDH permits the mixing of the existing European and North American PDH bit rates.
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All SDH equipment is ba sed on the use of a single single master master reference clock source & hence SDH is synchronous.
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Compatible with Compatible with the majority of existing PDH bit rates
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SDH provides for extraction/insertion, of a lower order bit rate from a higher order aggregate stream, without the need to de-multiplex in stages.
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SDH allows for integrated management using a centralised network control.
differentmanufacturers equipment. equipment. · SDH provides for a standard optical interface thus allowing the inter-working of differentmanufacturers About Me
Shankar BLR
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Increase in network reliability due to reduction of necessary equipment/jumpering.
View my complete profile Posted by Shankar BLR at 17:47
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Labels: Advantages Labels: Advantages of SDH, SDH, SDH interview questions, questions, SDH Topology
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1 comment: mahasiswa teladan 12 September 2013 10:05
hi..Im student from Informatics engineering, this a rticle is very informative, thanks for sharing :) sharing :) Reply Blog Archive
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