ETSI - TS 122 030
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Man-Machine Interface (MMI) of the User Equipment (UE)
|Publication Date:||1 August 2020|
The present document defines the requirements for and gives guidelines on the MMI on the User Equipment (UE). This includes the requirements of the user procedures for call control and supplementary service control, the requirements on the physical input media and the output, such as indications and displayed information.
Some clauses of the present document include the requirements that are applicable only to UE connected to CS Domain. See 3GPP TS 22.101 ; for overall service principles and 3GPP TS 22.001  for Circuit telecommunication services.