HD Voice Annex F Minimum Requirements with LTE – April 2014

HD Voice Annex C Minimum Requirements with GSM / UMTS – November 2013

HD Voice Annex D Minimum Requirements with CDMA2000 – November 2013

HD Voice Annex E Minimum Requirements with DECT – May 2013

Contact GSMA Legal Email Preference Centre Copyright © 2018 GSMA. GSM and the GSM Logo are registered and owned by the GSMA.