IR.45 introduces guidelines for the usage of Unstructured Supplementary Service Data (USSD) inter-Public Land Mobile Network (PLMN) connections and requirements for establishing USSD interworking between PLMN operators.
IR.45 introduces guidelines for the usage of Unstructured Supplementary Service Data (USSD) inter-Public Land Mobile Network (PLMN) connections and requirements for establishing USSD interworking between PLMN operators.