SS-ETS-300723 Complete Document History
Digital cellular telecommunications system - Enhanced Full Rate (EFR) speech processing functions - General description (GSM 06.51 version 5.2.1)

Complete Current Edition:
   EDITION 2 - ENGLISH LANGUAGE EDITION - Jan. 19, 2001

Obsolete Revision Information:
   EDITION 1 - ENGLISH LANGUAGE EDITION - April 30, 1997