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  ITU-T A.5 justification information for referenced document ETSI TS 132 450 V19.0.0 (2025-10) in draft L.1331
1. Clear description of the referenced document:
Name: ETSI TS 132 450 V19.0.0 (2025-10)
Title: Universal Mobile Telecommunications System (UMTS); LTE; Telecommunication management; Key Performance Indicators (KPI) for Evolved Universal Terrestrial Radio Access Network (E-UTRAN): Definitions (3GPP TS 32.450 version 19.0.0 Release 19)
2. Status of approval:
Publication
3. Justification for the specific reference:
Needed for implementing the Rec.
4. Current information, if any, about IPR issues:
Some information may be available in the ETSI IPR archives at (http://webapp.etsi.org/IPR/home.asp).
5. Other useful information describing the "Quality" of the document:
widely recognized within Europe as the standard policy control architecture, especially for mobile networks.
6. The degree of stability or maturity of the document:
Minor modifications can be reflected in one subsequent revision.
7. Relationship with other existing or emerging documents:
The referenced standard has completed the rigorous and comprehensive review and approval process of the ETSI. See history.
8. Any explicit references within that referenced document should also be listed:
[1] ITU-T Recommendation E.800: "Terms and Definitions related to Quality of Service and Network Performance including Dependability". [2] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications". [3] 3GPP TS 32.404: "Telecommunication management; Performance Management (PM); Performance measurements - Definitions and template". [4] 3GPP TS 32.405: "Telecommunication management; Performance Management (PM); Performance measurements Universal Terrestrial Radio Access Network (UTRAN) ". [5] 3GPP TS 32.406: "Telecommunication management; Performance Management (PM); Performance measurements Core Network (CN) Packet Switched (PS) domain". [6] 3GPP TS 32.407: "Telecommunication management; Performance Management (PM); Performance measurements Core Network (CN) Circuit Switched (CS) domain". [7] 3GPP TS 32.408: "Telecommunication management; Performance Management (PM); Performance measurements Teleservice". [8] 3GPP TS 32.409: "Telecommunication management; Performance Management (PM); Performance measurements IP Multimedia Subsystem (IMS)". [9] 3GPP TS 52.402: "Telecommunication management; Performance Management (PM); Performance measurements - GSM". [10] 3GPP TS 32.425: "Telecommunication management; Performance Management (PM); Performance measurements Evolved Universal Terrestrial Radio Access Network (E-UTRAN)".
9. Qualification of ETSI:
ETSI is recognized under the provisions of ITU-T Recommendations A.5 and A.6. Qualifying information is on file at TSB.
10. Other (for any supplementary information):
None.
Note: This form is based on Recommendation ITU-T A.5