04.013GPPMobile Station - Base Station System (MS - BSS) Interface General Aspects and PrinciplesTS
In addition to the multiservice capability, the GSM MS-BSS interface may allow for capabilities such as the following:
i) multidrop and other multiple terminal arrangements;
ii) choice of informaion bit rate, circuit or packet switching mode, layer 2 coding method, etc…, on a call-by-call or other basis (e.g. semipermanent, or subscription time option), over the same interface according to the user’s need;
iii) capability for compatibility checking in order to check whether calling and called terminals can communicate with each other.