ETS 300 556 : 20001

Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
4 Introduction
  4.1 General
  4.2 Objectives
  4.3 General characteristics
5 Structure of signalling layer 3 functions
  5.1 Basic groups of functions
  5.2 Protocol architecture
6 Services provided by signalling layer 3 at the Mobile
  Station side
  6.1 Registration services
  6.2 Call Control services
  6.3 Call independent Supplementary Services Support
  6.4 Short Message Services Support
7 Services provided by signalling layer 3 on the Network
  side
  7.1 Call control services
  7.2 Call independent Supplementary Services Support
  7.3 Short Message Services Support
8 Services assumed from signalling layers 1 and 2
  8.1 Priority
  8.2 Unacknowledged information transfer
  8.3 Acknowledged information transfer
  8.4 Random access
  8.5 Channel management and measurements
9 Interlayer service interfaces on the Mobile Station
  side
  9.1 Services provided by the Radio Resource Management
      entity
  9.2 Services provided by the Mobility Management
      entity
10 Interlayer service interfaces on the Network side
  10.1 Services provided by the Radio Resource Management
       entity
  10.2 Services provided by the Mobility Management
       entity
11 Standard L3 Messages
  11.1 Components of a standard L3 message
  11.2 Imperative part of a standard L3 message
  11.3 Non-imperative part of a standard L3 message
  11.4 Presence requirements of information elements
  11.5 Handling of superfluous information
Annex A (informative): MN-SERVICES ARROW DIAGRAM
History

Specifies the architecture of layer 3 and its sublayers on the GSM Um interface, i.e. the interface between mobile station and network.