However, so far, only system configurations having low AMR loop delays have been considered. [0040] However, if the AMR loop delay is as high as, e.g. 500 ms which may be the case for TFO connections, or in networks having satellite links between BTS (Base Transceiver Station) and TRAU (Transcoding and Rate Adaptation Unit), the use of the existing adaptation method according to the AMR specificat