[H.221Amd1] LC-Text: Recommendation H.221 Amdt 1 - Support for 14 kHz audio bandwidth extension of G.722.1 Annex C in H.221
[H.221Amd1s] LC-Summary: Recommendation H.221 Amdt 1 - Frame structure for a 64 to 1920 kbit/s channel in audiovisual teleservices: Support for 14 kHz audio bandwidth extension of G.722.1 Annex C in H.221
