ETSI - EN 301 705
Digital Cellular Telecommunications System (Phase 2+); Substitution and Muting of Lost Frames for Adaptive Multi Rate (AMR) Speech Traffic Channels
| Organization: | ETSI |
| Publication Date: | 1 July 1999 |
| Status: | inactive |
| Page Count: | 13 |
scope:
This document defines a frame substitution and muting procedure which shall be used by the Receive (RX) Discontinuous Transmission (DTX) handler when one or more lost speech or Silence Descriptor (SID) frames are received from the Radio Sub system (RSS).
The requirements of this document are mandatory for implementation in all GSM Base Station System (BSS)s and Mobile Stations (MS)s capable of supporting the AMR speech traffic channel. It is not mandatory to follow the bit exact implementation outlined in this document and the corresponding C source code.
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