Mobile radio interface layer 3; Supplementary services specification; General aspects
The present document gives the general aspects of the specification of supplementary services at the layer 3 radio interface.
3GPP TS 24.08x and 24.09x‑series specify the procedures used at the radio interface (reference point Um as defined in 3GPP 24.002) for normal operation, registration, erasure, activation, deactivation, invocation and interrogation of supplementary services. Provision and withdrawal of supplementary services is an administrative matter between the mobile subscriber and the service provider and cause no signalling on the radio interface.
3GPP TS 24.008 [48] and 3GPP TS 24.080 [27] specifies the formats and coding for the supplementary services.
Definitions and descriptions of supplementary services are given in 3GPP TS 22.004 and 3GPP TS 22.08x and 22.09x‑series.
Technical realization of supplementary services is described in 3GPP TS 23.011 and GSM 23.08x and 23.09x‑series.
The procedures for Call Control, Mobility Management and Radio Resource management at the layer 3 radio interface are defined in 3GPP TS 24.007 [49] and 3GPP TS 24.008 [48].