Support User Manuals

Telos Zephyr Xstream Two-Way Radio User Manual

Open as PDF

of 381

USER’S MANUAL

Appendix 10 – Glossary 362

TelosTestLine(Xstream,Zephyr&ZephyrExpress)24Hourtestlinewhichcanbecalledto

verifycorrectoperationofyourZephyrorZephyrExpresscodec.Numbersare+1216‐781‐9310

and+1216‐781‐9311.Thetestlinetransmitsindual/monomodeat32kHzandcanbereceived

inL3Mo

nousingoneBchannelorL3Stereousing2Bchannels.Telosalsomaintainsan

identicallyconfiguredtestlineinFreising,Germanyat49816142061(dialthisnumbertwice).

TerminalAdapterSeeTA

TieLineSeeTieTrunk.

TietrunkATrunkbetweentwoPBXs.Note,atieli

neisadedicatedcircuit,notaswitched

circuit.SeeTrunk.

TR‐008SeeSLC‐96

TroubleTicketATelco“workorder”usedtotrackCustomerRepairswithintheTelco.Ifyoucall

someone“inside”theTelco’srepairdepartment,theywillneedthisnumbertoproceed.Itwill

alsobenee

dedwheneveryoucalltocheckonthestatusofarepair.Alwaysaskforthisnumber

wheninitiatingarepairrequest.

TrunkAcommunicationspathbetweentwoswitchingsystems.Notethatmanytrunksmaybe

onasinglecircuit(ifthatcircuithasmultiplechannels).Thetrunksmostuserswilldealwithare

betwee

ntheTelcoswitchandaPBX.However,aTieTrunkcanconnecttwoPBXs.SeealsoTie

TrunkandTrunkGroup

TrunkGroupAnumberoftelephonechannelswhicharefunctionallyrelated.Mostcommonis

theHuntGroup.OthercommontypesincludeIncomingTrunkGroupsandOu

tgoingTrunk

Groups.SeealsoCombinationTrunksandTwo‐wayDIDTrunks.

TrunkSide1)Thesideofacentralofficethatfacesthenetwork.HistoricallymanyCOswitches

couldnotmaketrunktotrunkconnections(asopposedtotandemandlongdistanceswitches,

thatarealwaysusedtoco

nnecttrunktogether).Hencetheneedtodistinguishbetweenthe

"lineside"andthe"trunkside"oftheswitch.SeealsoLineSide.

2)ThesideofaPBXthatconnectstotheTelco.HistoricallymanyPBXscouldnotmaketrunkto

trunkconnections.Hencetheneedtodistinguishbetweenthe"li

neside"andthe"trunkside"of

theswitch.Sinceatrunkisaswitch‐to‐switchcircuit,thesecircuitscanbecalledtrunks.

Beware,eventhoughyouhaveaPBX,theTelcomaystillcallthese'lines'(eventhoughyourPBX

considersthemtrunks).SeealsoTrunkandLineSi

de

Two‐wayDIDtrunkAnISDNPRIequippedfordirectinwarddialing.MostPBXtrunksare

relatedtoagivenphonenumber,eitheraloneoraspartofahuntgroup.Inthecaseofa

“normal”(i.e.analog)DIDTrunk,agroupofphonenumbersareassociatedwiththatDIDtru

nk

(orgroupoftrunks)andincomingcallsincludetheDIDnumber,sothePBXcanroutethatcallto

thecorrectDIDextension.Theseareone‐way(i.e.inwardonly)trunks.ThisisexactlyhowISDN

PRIfunctions,withtheDIDinformationcominginovertheDchannel.Th

ereisabigdifference

betweenanormalDIDTrunkandaTwo‐wayDIDtrunkoverISDNPRI.Foronething,ISDNPRIis

digital.AnotherdistinctionisthatyoucannotdialoutoveratrueDIDtrunk,whileyoucandial

outoveraPRI(hencetheconflictingdesignation"Tw

oWayDirectInwardDialingTrunk").

TwoWireAcircuitpathwhereonlyasinglepairofwiresisused.Ahybridisusedtoconvert

fromtwowiretofourwirecircuits.Nohybridisperfect,andthoseusedbythephonecompany

canbepoor.However,thehybridsinTe

losTWO/2101familyareapproachingperfection!

previous next