Description
1.Productimplementationstandard:refertoYD/T630-93standardofPostandTelecommunicationsBureauandFenjindaEnterpriseStandard;
2.Insulationmaterial:high-densitypolyethyleneOrpolypropylene,markthecoloroftheinsulatedwireaccordingtothenationalstandardchromatogram;
3.Insulationpair:twistasinglepieceofinsulationintopairsaccordingtodifferentpitches,andusethespecifiedchromatographiccombinationtoidentifythepairThecrosstalkbetweenthecluesisreduced,andthepowerconsumptionissmall.
Application
Communicationengineeringwiring,indoortelephonecommunicationcablesystemwiringconnections,backbonelinesbetweenvoicecommunicationsystems,program-controlledswitches,telephones.
Specifications
Thecommonspecificationsoftelephonelinesaretwo-coreandfour-core,withwirediametersof0.4and0.5,respectively,and0.8and1.0insomeareas.Inadditiontotwocoresandfourcores,therearefour,six,eight,andtencores.Ifthegeneralhouseholdisinthelocalcallmode,2coresaresufficient.IfitisusedbyacompanyorsomePBX,takingintoaccounttheneedsoftelephonebroadbanduse,itisrecommendedtousea4-corephoneline.Ifyouareusingadigitalphone,itisrecommendedtousea6-corephoneline.
Material
Commonmaterials(conductors)are:
1,coppercladsteel
ThiskindofwireisrelativelyhardandnotsuitableforuseThewireispulledexternallyandthecoreiseasilybroken.Butburiedinthewallwillstillbeusable.Anditcanonlybeusedforshort-distanceuse,(suchasthecorridorjunctionboxtotheuser)
2,copper-cladaluminum
Thiskindofwireisrelativelysoft,anditiseasiertobreakthecore.Itcanbeburiedinthewall,oritcanbepulledoutsidethewall.Andcanonlybeusedforshort-distanceuse,(suchasthecorridorjunctionboxtotheuser)
3,allcopper.
Thiskindofwireissoft,itcanbeburiedinthewall,oritcanbepulledoutsidethewall.Canbeusedforlong-distancetransmission.
Amongthem,theonlyonesthatmeetnationalstandardsaretelephonelinesthatuseall-copper.
Modelexplanation
HYV2x1/0.4CCS
HYV4x1/0.4CCS
HYV2x1/0.4BC
HYV2x1/0.5BC
HYV4x1/0.4BC
HYV4x1/0.5BC
HSYV2x2x0.5BC
Remarks:CCSisacopperpackageSteelandBCareallcopper.
HYV2x1/0.4CCS,whereHYVistheEnglishmodelofthetelephoneline,2standsfor2cores,and1/0.4CCSstandsforasingle0.4mmdiametercopper-cladsteelconductor.
Byanalogy,HYV4x1/0.4BC,HYVmodel,4represents4-core,1/0.5BCrepresentsasingle0.5mmdiameterpurecopperconductor.
Inparticular,HSYV2x2x0.5,"S"standsfortwistedpair,2x2standsfor2pairs(4cores)twistedpair,and0.5standsforasingleconductorwithadiameterof0.5mm.
Comparedwithordinaryparalleltelephonelines,twisted-pairtelephonelinesmainlyservetoincreasetransmissionspeedandlowerpowerloss.
Distinguishgoodfrombad
1.Thebrandsonthelistaretrustworthyandtheproductqualityisguaranteed.
2.Theconductoradoptsimportedhigh-purityoxygen-freecoppertelephoneline,whichhaslowtransmissionattenuation,lowsignalloss,clearsoundquality,nonoise,andnosenseofdistanceinthecall.
3.Thesheathadoptsatelephonelinewithhigh-gradetransparentoutermaterial,whichisresistanttoacidandalkalicorrosion,anti-aging,andhasalongservicelife.
4.Thesheathadoptsatransparentmaterialforthetelephoneline,whichhasgoodmechanicalandphysicalproperties,electricalpropertiesandthermalstability.Thecontentofheavymetalsandheavymetalcompoundssuchasleadandcadmiumisextremelylow.
5.Thetelephonelineusingimportedpolypropylenematerialhashighpurity,lowertransmissionattenuation,andhighertransmissionspeed.ItissuitableforbroadbandInternetaccessandcanmeetthehightransmissionspeedrequirementsofvideophones.