Question: What is the primary purpose of the Iq reference point in the IP Multimedia Subsystem (IMS) architecture?
Option 1: To facilitate direct communication between User Equipment (UE) and the Serving-CSCF (S-CSCF)
Option 2: To manage Quality of Service (QoS) parameters between the IMS Core and external networks
Option 3: To convey information necessary for activating IMS Application Level Gateway (IMS-ALG) procedures at the IMS Access Gateway
Option 4: To handle authentication and authorization of users accessing IMS services
Explanation: The Iq reference point enables communication between the P-CSCF and the IMS Access Gateway, primarily providing information for initiating IMS Application Level Gateway (IMS-ALG) procedures, ensuring seamless access and management of multimedia services.