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  ITU-T A.5 justification information for referenced document ETSI TR 101 578 V1.3.1 (2018-10) in draft E.804.1
1. Clear description of the referenced document:
Name: ETSI TR 101 578 V1.3.1 (2018-10)
Title: Speech and multimedia Transmission Quality (STQ); QoS aspects of TCP-based video services like YouTube™
2. Status of approval:
Approved by ETSI
3. Justification for the specific reference:
Section 7.1 "Audio-visual streaming" of draft recommendation E.804.1 is widely based on material taken from ETSI TR 101 578 v 1.3.1, which the most recent document on the topic of QoS metrics for streaming services
4. Current information, if any, about IPR issues:
ETSI IPR information is available at http://www.etsi.org/
5. Other useful information describing the "Quality" of the document:
ETSI TR 101 578 v 1.3.1 was approved on 19th September 2018
6. The degree of stability or maturity of the document:
ETSI Published.
7. Relationship with other existing or emerging documents:
Is the only currently published standard on this subject.
8. Any explicit references within that referenced document should also be listed:
[i.1] ETSI TS 102 250-2: "Speech and multimedia Transmission Quality (STQ); QoS aspects for/
popular services in mobile networks; Part 2: Definition of Quality of Service parameters and their/
computation"./
[i.2] ETSI TS 102 250-5: "Speech and multimedia Transmission Quality (STQ); QoS aspects for/
popular services in mobile networks; Part 5: Definition of typical measurement profiles".
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