The purpose of this specification is to define the requirements for and give guidelines on the MMI for calls on the GSM mobile station. 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. This specification complements specifications GSM 02.07, 02.11, 02.17, 02.40, 03.01, 03.09, 03.12, 03.14, 04.08, 05.08 11.01 and 11.10 and deals with MMI items not covered by these specifications.
IN_DEVELOPMENT
prSSH ETS 300 511:1995 ed.2
40.20
DIS ballot initiated: 12 weeks
Feb 9, 2026
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