EntityQ1478261· pop 8· linked from 51 articlescall waitingSign in to savea telephone serviceConnectionsCaller IDEntityMichiganEntitytelephoneEntityhuman voiceEntityGlobal System for Mobile CommunicationsEntitymodemEntitySiemensEntityRobert BoschEntityEricssonEntitydigital subscriber lineEntityUniversal Mobile Telecommunications SystemEntitydial-upEntityAlcatel-LucentOrganizationTrentonEntitytelephone callEntityplain old telephone serviceEntityconference callEntityvoicemailEntityWestern ElectricCompanyNorth American Numbering PlanEntityCategoriesCalling featuresTelephone service enhanced features