EN 300 925 : 7.0.2

Intellectual Property Rights
Foreword
1. Scope
2. References
3. Definitions and abbreviations
   3.1 Definitions
   3.2 Abbreviations
4. Description
5. Normal operation with successful outcome
   5.1 Provision
   5.2 Withdrawal
   5.3 Network related service configuration
   5.4 Normal operation for voice group call establishment
   5.5 Charging requirements
6. Exceptional procedures or unsuccessful outcome
7. Interaction with other GSM services
   7.1 Calling Line Identification Presentation (CLIP)
   7.2 Calling Line Identification Restriction (CLIR)
   7.3 Connected Line Identification Presentation (COLP)
   7.4 Connected Line Identification Restriction (COLR)
   7.5 Call Forwarding Unconditional (CFU)
   7.6 Call Forwarding on mobile subscriber Busy (CFB)
   7.7 Call Forwarding on No Reply (CFNRy)
   7.8 Call Forwarding on mobile subscriber Not Reachable
        (CFNRc)
   7.9 Call Waiting (CW)
   7.10 Call Hold (HOLD)
   7.11 Multi-party Service (MPTY)
   7.12 Closed User Group (CUG)
   7.13 Advice of Charge (AoC)
   7.14 Barring of All Outgoing Calls (BAOC)
   7.15 Barring of Outgoing International Calls (BOIC)
   7.16 Barring of Outgoing International Calls except those
        to the Home PLMN country (BOIC-exHC)
   7.17 Barring of All Incoming Calls (BAIC)
   7.18 Barring of Incoming Calls when Roaming outside the
        home PLMN country (BIC-Roam)
   7.19 Explicit Call Transfer (ECT)
   7.20 Enhanced Multi-Level Precedence and óPre-emption service
        (eMLPP)
   7.21 Short Message Services (SMS)
   7.22 Operator Determined Barring (ODB)
8. Interworking considerations
Annex A (informative): Status of Technical Specification
        GSM 02.68
History

Gives the stage one description of the Voice Group Call Service (VGCS) which allows speech conversation of a predefined group of service subscribers in half duplex mode on the radio link taking into account multiple mobile service subscribers involved in the VGCS call per cell.