03.603GPPGeneral Packet Radio Service (GPRS)Release 1998Service descriptionStage 2TS
Non-GPRS MSs in GSM PLMNs that support GPRS shall, without changes, be able to continue operation.
GSM PLMNs that do not support GPRS shall, without changes, be able to continue interworking with GSM PLMNs that do support GPRS.
A GPRS ME shall be able to access GPRS services with GPRS-aware SIMs, and with SIMs that are not GPRS-aware. A GPRS-aware SIM is able to store information in the elementary files EFKcGPRS and EFLOCIGPRS ,as defined in GSM 11.11 .
GPRS Release 98 shall be backwards compatible with Release 97. Messages, information elements, and code points that are not recognised by Release 97 equipment shall be rejected with appropriate error causes.