SS-ETS-300726 Complete Document History
Digital cellular telecommunications system (Phase 2+) - Enhanced Full Rate (EFR) speech transcoding (GSM 06.60 version 5.2.1)

Complete Current Edition:
   EDITION 2 - ENGLISH LANGUAGE EDITION - Aug. 6, 1999

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