VT1.5 (original) (raw)
VT1.5 is a type of virtual tributary in SONET. SONET bandwidth is defined in multiples of an OC-1/STS-1, each of which can transport up to 51.84 Mbit/s. However, it is frequently desirable to address much smaller portions of bandwidth. To meet this need, sub-STS-1 facilities called Virtual Tributaries have been defined. In North America and Japan, the VT1.5 is the most common virtual tributary because it can carry 1.544 Mbit/s; just enough room for a DS1/T1 signal. In Europe, the VT2 (with a data rate of 2.304 Mbit/s) is used to transport E1s. Four types of VT's defined in SONET
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| dbo:abstract | VT1.5 is a type of virtual tributary in SONET. SONET bandwidth is defined in multiples of an OC-1/STS-1, each of which can transport up to 51.84 Mbit/s. However, it is frequently desirable to address much smaller portions of bandwidth. To meet this need, sub-STS-1 facilities called Virtual Tributaries have been defined. In North America and Japan, the VT1.5 is the most common virtual tributary because it can carry 1.544 Mbit/s; just enough room for a DS1/T1 signal. In Europe, the VT2 (with a data rate of 2.304 Mbit/s) is used to transport E1s. Some SONET manufacturers offer products that can switch at the VT1.5 level. Such equipment is able to re-arrange the data payloads so that inbound VT1.5s are placed into a completely different set of outbound STS's than the ones they arrived in. Among other things, this allows the bandwidth usage to be optimized and facilitates a cleaner network design. The following is provided via Network Infrastructure/Design Student: Four types of VT's defined in SONET * VT 1.5 (DS-1: 1.544 Mbit/s) * VT 2 (E-1: 2.048 Mbit/s) * VT 3 (DS-1C: 3.152 Mbit/s) * VT 6 (DS-2: 6.312 Mbit/s) 7 VT groups (VTG) per STS-1. * Four DS-1s map into one VTG. * One STS-1 frame can carry 28 DS-1s * DS-3 Maps directly to STS-1. VT are not needed. (en) |
| dbo:wikiPageExternalLink | http://www.eetimes.com/document.asp%3Fdoc_id=1272062 |
| dbo:wikiPageID | 5270501 (xsd:integer) |
| dbo:wikiPageLength | 1573 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1046881684 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:E-carrier dbr:Optical_Carrier dbc:Network_protocols dbr:Europe dbr:Bandwidth_(computing) dbr:North_America dbr:Digital_Signal_1 dbr:Japan dbc:Synchronous_optical_networking dbr:SONET |
| dct:subject | dbc:Network_protocols dbc:Synchronous_optical_networking |
| gold:hypernym | dbr:Type |
| rdf:type | yago:WikicatNetworkProtocols yago:Abstraction100002137 yago:Communication100033020 yago:Direction106786629 yago:Message106598915 yago:Protocol106665108 yago:Rule106652242 |
| rdfs:comment | VT1.5 is a type of virtual tributary in SONET. SONET bandwidth is defined in multiples of an OC-1/STS-1, each of which can transport up to 51.84 Mbit/s. However, it is frequently desirable to address much smaller portions of bandwidth. To meet this need, sub-STS-1 facilities called Virtual Tributaries have been defined. In North America and Japan, the VT1.5 is the most common virtual tributary because it can carry 1.544 Mbit/s; just enough room for a DS1/T1 signal. In Europe, the VT2 (with a data rate of 2.304 Mbit/s) is used to transport E1s. Four types of VT's defined in SONET (en) |
| rdfs:label | VT1.5 (en) |
| owl:sameAs | freebase:VT1.5 yago-res:VT1.5 wikidata:VT1.5 https://global.dbpedia.org/id/4x3CW |
| prov:wasDerivedFrom | wikipedia-en:VT1.5?oldid=1046881684&ns=0 |
| foaf:isPrimaryTopicOf | wikipedia-en:VT1.5 |
| is dbo:wikiPageWikiLink of | dbr:Transmux dbr:Synchronous_optical_networking |
| is foaf:primaryTopic of | wikipedia-en:VT1.5 |