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Whenitcomestomakingphonecallsovertheinternet,therearetwomainmethodsthatarecommonlyused:directdialingandcallback.Sowhatexactlyisthedifferencebetweenthetwo?Directdialing,alsoknownasdirectcallingordirectdial,isamethodwherethecallerinitiatesthecallbydialingtherecipient'sphonenumberdirectly.Thismeansthatthecallismadeinreal-time,withthecallerbeingconnectedtotherecipientassoonasthecallisplaced.Directdialingisaconvenientandstraightforwardwaytomakeinternationalcallsorlong-distancecallswithoutincurringhighcosts.Ontheotherhand,callbackisamethodwherethecallerinitiatesthecallbyrequestingacallbackserviceprovidertocallthemfirst.Oncethecallbackserviceprovidercallsthecaller,theyarethenconnectedtotherecipient.Thismethodisoftenusedtobypasshighinternationalcallingratesortotakeadvantageofcheapercallingratesofferedbycallbackserviceproviders.Inconclusion,themaindifferencebetweendirectdialingandcallbackisthewaythecallisinitiated.Directdialinginvolvesthecallerdialingtherecipient'snumberdirectly,whilecallbackinvolvesthecallerrequestingacallbackserviceprovidertoinitiatethecall.Bothmethodshavetheirownadvantagesandarecommonlyusedindifferentsituations.