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Digital cellular telecommunications system (Phase 2+) (GSM); Adaptive Multi-Rate (AMR) speech transcoding (GSM 06.90 version 7.2.1 Release 1998)
STANDARD published on 28.4.2000
Designation standards: ETSI EN 301704-V7.2.1
Publication date standards: 28.4.2000
SKU: NS-310217
The number of pages: 58
Approximate weight : 174 g (0.38 lbs)
Country: European technical standard
Category: Technical standards ETSI
Latest update: 2025-07-31 (Number of items: 2 210 448)
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