Question: Which RANAP service group utilizes connection-oriented signalling transport for a single UE and is accessed through the Dedicated Control SAP?
Option 1: General Control Services, utilizing connectionless signalling transport
Option 2: Dedicated Control Services, utilizing connection-oriented signalling transport
Option 3: Notification Services, utilizing connectionless signalling transport for specified areas
Option 4: MBMS Control Services, utilizing connection-oriented signalling transport for multiple bearers
Explanation: Dedicated Control Services are specifically related to one User Equipment (UE) and require a maintained Iu signalling connection for that UE. This necessitates the use of connection-oriented signalling transport to ensure reliable, dedicated communication between the Radio Network Controller (RNC) and the logical Core Network (CN) domain for each individual UE, which is facilitated through the Dedicated Control SAP.