$10
Performance requirements of audiovisual terminals—Frame structure for a 64 to 1920kbit/s channel in audiovisual teleservices
IDT CCITT H.221-1992
电子工业部电子标准化研究所
This standard is the original Chinese electronic standard.
If you need translation, please contact email: ChineseStandardsLibraryS001@gmail.com.
After you successfully purchase, we will send the electronic version of this standard to your email address