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  ITU-T A.5 justification information for referenced document CEA-708 in draft J.700
1. Clear description of the referenced document:
Name: CEA-708
Title: IDigital Television (DTV) Closed Captioning (August 2008)
2. Status of approval:
his is an approved document by CEA (Consumer Electronics Association).
3. Justification for the specific reference:
This specification defines digital television (DTV) closed captioning for digital broadcasting widely used in US, and constitutes an essential part of the Recommendation. Since this specification consists of huge number of pages, making reference saves a lot of paper in the printing process.
4. Current information, if any, about IPR issues:
No known issues.
5. Other useful information describing the "Quality" of the document:
This document provides an initial industry consensus view on the closed captioning architecture to support broadcast services, especially in the U.S.
6. The degree of stability or maturity of the document:
CEA-708-D is a stable document. CEA-708-D supersedes CEA-708-C (July 2006).
7. Relationship with other existing or emerging documents:
CEA-708-D is a stable document
8. Any explicit references within that referenced document should also be listed:
Normative References:/
[1]ANSI INCTS 4, Information Systems - Coded Character Sets - 7 Bit American National Standard Code for Information Interchange (7-BIT ASCII), 2002/
[2]ATSC A/53E, ATSC Digital Standatd, December 27, 2005/
[3]ATSC A/65C, Program and System Information Protocol for Terrestrial Broadcast and Cable, January 2, 2005/
[4]CEA-608-C, Line 21 Data Service, August, 2005/
[5]ISO/IEC 2022, Information Technology - Character code structure and extension techniques, April 15, 1999/
[6]ISO/IEC IS 13818-1:2000(E), Information Technologiy - Generic coding of moving pictures and associated audio information: systems, 2000/
[7]ISO/IEC IS 13818-2:2000(E), Information Standard, Information Technology - Generic coding of moving pictures and associated audio information: systems, 2000 /
[8]SMPTE RP 218-2002, Specification for Safe Action and Safe Title Areas for Television Systems/
[9]SMPTE Standard 12M, Television, Audio and File - Time and Control Code, 1999
9. Qualification of CTA:
SG9 requested in 2007-11 and TSB Dir approved A5 in 2007-12

10. Other (for any supplementary information):
NONE
Note: This form is based on Recommendation ITU-T A.5