4.2.29 EF_SDN (Service Dialling Numbers)

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

If service n° 4 and or service n° 89 is "available", this file shall be present.

This EF contains special service numbers (SDN) and/or the respective supplementary service control strings (SSC). In addition it contains identifiers of associated network/bearer capabilities and identifiers of extension records at the USIM ADF level. It may also contain associated alpha‑tagging. If the service n° 89 is available this file will contain the eCall test and reconfiguration numbers that are used by an UE in eCall and normal service mode.

Identifier: ‘6F49’		Structure: linear fixed			Optional
Record length: X+14 bytes			Update activity: low
Access Conditions: READ PIN UPDATE ADM DEACTIVATE ADM ACTIVATE ADM
Bytes	Description			M/O		Length
1‑X	Alpha identifier			O		X bytes
X+1	Length of BCD number/SSC contents			M		1 bytes
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	Extension3 Record Identifier			M		1 byte

For contents and coding of all data items see the respective data items of the EF_ADN (clause 4.4.2.3), with the exception that extension records are stored in the EF_EXT3 and capability/configuration parameters are stored in EF_CCP2.

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