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  ITU-T A.5 justification information for referenced document ETSI TS 123 107 V6.4.0 (2006-03) in draft Y.2201
1. Clear description of the referenced document:
Name: ETSI TS 123 107 V6.4.0 (2006-03)
Title: 3GPP; Technical Specification Group Services and System Aspects; Quality of Service (QoS) concept and architecture (Release 6)
2. Status of approval:
Normative Reference
3. Justification for the specific reference:
Y.2201 discuss QoS classes which NGN should support. ETSI TS 123 107 defines the QoS classes.
4. Current information, if any, about IPR issues:
No known issues.
5. Other useful information describing the "Quality" of the document:
ETSI Technical Specification since 2006.
6. The degree of stability or maturity of the document:
ETSI Technical Specification since 2006.
7. Relationship with other existing or emerging documents:
None
8. Any explicit references within that referenced document should also be listed:
ETSI TS 123.110: "UMTS Access Stratum - Services and Functions"./
ETSI TS 122.100: "UMTS Phase 1"./
ETSI TS 123.121: "Architectural Requirements for Release 1999"./
ETSI TS 122.105: "Services & Service capabilities"./
ETSI TS 124.008: "Mobile radio interface layer 3 specification; Core Network Protocols - Stage 3"./
ETSI TS 123.207: "End-to-end QoS concept and architecture"./
ETSI TS 123.008: "Organization of subscriber data"./
ETSI TS 123.067: "enhanced Multi-Level Precedence and Pre-emption service (eMLPP) - Stage 2"./
ETSI TS 103.60 (Release 1998): "Digital cellular telecommunications system (Phase 2+); General Packet Radio Service (GPRS); Service description; Stage 2 (Release 1998)".
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