This EF contains Barred Dialling Numbers (BDN) and/or Supplementary Service Control strings (SSC). In addition it
contains identifiers of associated network/bearer capabilities and identifiers of extension records. It may also contain an associated alpha-tagging. As the BDN service relies on the Call Control feature, BDN shall only be available if Call Control is available. If this file is present in the USIM, the Enabled Services Table (EF EST) shall also be present.