ITU-T Recommendation H.221
Title : Frame structure for a 64 to 1920 kbit/s channel in audiovisual
teleservices
Date of adoption : 07/1997
TABLE OF CONTENTS
Page
1 Basic principle 1
1.1 Frame Alignment Signal (FAS) 1
1.2 Bit-rate Allocation Signal (BAS) 3
1.3 Encryption Cont
