... throughsometypeofcommunicationsmedium,oratsomedistance,betweentwoormorepartiesorentitieswhoaremoreorlesssimultaneouslyincontact,frequentlywitha 'give-and-take' charactertothecontact.Hu-manparticipantsina callaregenerallycalledpar-tiestothecall.3.n.Innetworking,acommunicationsassociationbetweena ... havecompatibleperipherals).SeeCallerill,callblocking.callingcardAremoteoroff-premisesphoneserviceprovidedbycommoncarrierstoallowlocalandlong-distancecallstobechargedbacktothesubscriber'slocalphonenumberorotherauthorizedbillingnum-ber.Theremayormaynotbesurchargesassociatedwithsuchacall.Thenamederivesfromawalletcardtypicallyissuedtothesubscriberwithinstructionsanddigitstobedialedtogainaccesstotheservice.Inmanycases,youdon'tneedthephysicalcardtomakethecall,butautomatedphonesarebecomingpreva-lentinwhichthecardisphysicallyinsertedinaslotorswipedthroughthephonetoexpeditetheprocess-ingofthecall.BellCanadaclaimsatrademarkovertheCallingCardname,butthetermiswidelyusedinthegenericsense,makingitdifficulttoenforcethetrademark.callingjackInmanualswitchboardsystems,thejackthatisusedbytheoperatortoconnectthecallthatcameinthroughtheansweringjacktothecircuitforthesubscriberwhowillbereceivingthecall.callingnumberdisplaySeeCallerName,Callerill.callingparty,calling stationApersonorentityorigi-natingacall.Seecall.CallingPartyNumberCPN.Intelephony,acom-monchannelsignaling(CCS)parameterintheini-tialaddressmessagethatidentifiesthecallingnum-berandissenttothedestinationcarrier.calling ... engagedinacall.CallWaitingsig-nalsthecallee, eitherbyanaudio signalorblinkinglight,thatthereisanother party tryingtocall,andpro-videsthecalleetheoptionofignoring, terminating,orholdingthecurrent...