This provides lower average data rates (ADRs) compared to EVRC, for a given voice quality.
4GV is designed to allow service providers to dynamically prioritize voice capacity on their network as required.
The Enhanced Variable Rate Coder (EVRC) is a speech codec used for cellular telephony in cdma2000 systems.
EVRC-B replaced EVRC as the main speech codec for cdma2000 and its first network commercial deployment started in 2007.
A wideband extension, EVRC-WB, provides speech quality that exceeds regular wireline telephony and its standardization process was completed at the summer of 2007.