Network operators telephones
Center operators remote supportConstruction of corporate data networksContact center servicesDistributed enterprise network telephonyFacsimile services, communications by faxFax toHotlineMonitoring for radio and television broadcastingNetwork operators telephonesOperators of telephone local wireless communications networksOrganization of telephone networksProduction AutomationRadio communication servicesService organizations, service providers, telecommunicationsService providers on the use of the web serverTelecommunication networks and servicesTelegraphTelephone servicesTelephone services moreTelex servicesTransmission of messages by telephone and telex in writingTrunked radio service providers