ETSI TS 101 376-6-4
ETSI TS 101 376-6-4
GEO-Mobile Radio Interface Specifications; Part 6: Speech coding specifications; Sub-part 4: Vocoder: Comfort Noise Aspects; GMR-1 06.012 Edition: 1.1.1European Telecommunications Standards Institute / 01-Mar-2001 / 11 pages