4.2.44 EF_BDN (Barred Dialling Numbers)

31.1023GPPCharacteristics of the Universal Subscriber Identity Module (USIM) applicationRelease 17TS

If service n° 6 is "available", this file shall be present.

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.

Identifier: ‘6F4D’		Structure: linear fixed			Optional
Record length: X+15 bytes			Update activity: low
Access Conditions: READ PIN UPDATE PIN2 DEACTIVATE ADM ACTIVATE ADM
Bytes	Description			M/O		Length
1 to X	Alpha Identifier			O		X bytes
X+1	Length of BCD number/SSC contents			M		1 byte
X+2	TON and NPI			M		1 byte
X+3 to X+12	Dialling Number/SSC String			M		10 bytes
X+13	Capability/Configuration2 Record Identifier			M		1 byte
X+14	Extension4 Record Identifier			M		1 byte
X+15	Comparison Method Pointer			M		1 byte

For contents and coding of all data items, except for the Comparison Method Pointer, see the respective data items of EFADN, with the exception that extension records are stored in the EFEXT4 and capability/configuration parameters are stored in EF_CCP2. The Comparison Method Pointer refers to a record number in EF_CMI.

NOTE: The value of X (the number of bytes in the alpha‑identifier) may be different to the length denoted X in EFADN.