Question: In a GSM PLMN, what resource is allocated by the network for data calls involving channel codings TCH/F14.4, TCH/F28.8, and TCH/F43.2?
Option 1: PLMN specific rate adaptation
Option 2: V.110 based rate adaptation
Option 3: Radio Link Protocol (RLP) for non-transparent services
Option 4: Data Compression as per specification guidelines
Explanation: For data calls in a GSM PLMN, the network allocates PLMN specific rate adaptation for TCH/F14.4, TCH/F28.8, and TCH/F43.2 channel codings, differing from V.110 based rate adaptation used for lower-speed channels, to efficiently support various data services based on connection attributes.