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TS 22.067 (SA1)
eMLPP – enhanced Multi-Level Precedence and Pre-emption – Stage 1

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V15.0.0 (PDF)2018/06  15 p.
V14.0.0  2017/03  16 p.
V13.0.0  2015/12  16 p.
V12.0.0  2014/10  15 p.
V11.1.0  2013/12  16 p.
V10.0.0  2011/04  16 p.
V9.0.0  2009/12  16 p.
V8.0.0  2006/12  16 p.
V7.0.0  2006/03  16 p.
V6.1.0  2003/06  16 p.
V5.0.0  2002/07  16 p.
V4.1.0  2002/03  17 p.
V3.0.1  1999/10  16 p.

Rapporteur:  Dr. Swetina, Joerg
Antecedent:  TS 02.67
See also:  eMLPP-related TS/TR

This TS specifies the stage 1 description of the enhanced Multi-Level Precedence and Pre-emption Service (eMLPP). This service has two parts: precedence and pre-emption. Precedence involves assigning a priority level to a call in combination with fast call set-up. Pre-emption involves the seizing of resources, which are in use by a call of a lower precedence, by a higher level precedence call in the absence of idle resources. Pre-emption can also involve the disconnection of an on-going call of lower precedence to accept an incoming call of higher precedence.

The eMLPP service is provided as a network operator's option to a domain of a network. The domain can be the whole network or a subset of the network. The eMLPP service applies to all network resources in the domain that is in common use. The eMLPP service is applicable to all mobile stations in the domain with all or some mobile stations having a respective subscription assigning precedence according to the eMLPP service.

eMLPP is a supplementary service and shall be provided to a subscriber for all basic services subscribed to and for which eMLPP applies.

The service is described from the service subscriber's and user's point of view, in particular:
  • the procedure for normal operation with successful outcome;
  • the action to be taken in exceptional circumstances;
  • the interaction with other services and features.
This TS does not deal with the Man-Machine Interface (MMI) requirements, but makes reference to the appropriate specifications.

This TS is applicable to teleservices 1x and 6x and to all bearer services used in a mobile network if eMLPP is provided. Any interaction with other services and/or networks not dealt with in clauses 8 or 9 are outside the scope of this TS.


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1 Scope2 References3 Definitions and abbreviations3.1 Definitions3.2 Abbreviations4 Description4.1 Applicability to telecommunication services5 Normal operation with successful outcome5.1 Provision5.2 Withdrawal5.3 Registration5.4 Erasure5.5 Network related service configuration5.6 Activation5.7 Deactivation5.8 Invocation5.9 Normal operation5.10 Interrogation5.11 Charging requirements6 Exceptional procedures or unsuccessful outcome7 Alternate procedures8 Interaction with other supplementary services8.1 Calling Line Identification Presentation (CLIP)8.2 Calling Line Identification Restriction (CLIR)8.3 Connected Line Identification Presentation (COLP)8.4 Connected Line Identification Restriction (COLR)8.5 Call Forwarding Unconditional (CFU)8.6 Call Forwarding on mobile subscriber busy (CFB)8.7 Call Forwarding on No Reply (CFNRy)8.8 Call Forwarding on mobile subscriber Not Reachable (CFNRc)8.9 Call Waiting (CW)8.10 Call Hold8.11 Multi-party Service (MPTY)8.12 Closed User Group (CUG)8.13 Advice of Charge (AoC)8.14 Barring of Outgoing Calls (BAOC)8.15 Barring of Outgoing International Calls (BOIC)8.16 Barring of Outgoing International Calls except those to the Home PLMN country (BOIC-exHC)8.17 Barring of All Incoming Calls (BAIC)8.18 Barring of Incoming Calls when Roaming outside the home PLMN country (BIC-Roam)8.19 Call Transfer (ECT)9 Interworking considerationsA Change history


1  ScopePDF-p. 4
2  References
3  Definitions and abbreviationsPDF-p. 5
4  DescriptionPDF-p. 6
5  Normal operation with successful outcome
6  Exceptional procedures or unsuccessful outcome
7  Alternate proceduresUp
8  Interaction with other supplementary services
9  Interworking considerations
A  Change historyPDF-p. 13

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