European Digital Cellular Telecommunications System (Phase 2); Rate Adaption on the Mobile Station - Base Station System (MS - BSS) Interface (GSM 04.21)
This specification defines the rate adaptation functions to be used in GSM PLMN Mobile Stations for adapting terminal interface data rates to the MS-BSS interface data rates in accordance with GSM 03.10. The provision of these functions will depend on the services a particular station is designed to support. Note: This Specification should be considered together with GSM Specification 08.20 (Rate Adaptation on the BSS-MSC Interface) to give a complete description of PLMN rate adaptation.