ETSI TS 101 108

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ETSI TS 101 108 English PDF Digital cellular telecommunications system (Phase 2+) (GSM); Tandem Free Operation (TFO); Service Description; Stage 1 (GSM 02.53 version 7.0.1 Release 1998)

standard published 07/01/1999 by European Telecommunications Standards Institute

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This standard specifies the stage 1 description for the Tandem Free Op eration feature which provides the capability to avoid using two GSM s peech codecs in mobile to mobile speech calls. The primary aim is to realise improvements in speech quality. The TFO mode of operation cou ld also be used to reduce inter-MSC transmission bandwidth requirement s.