Question: What is the primary function of the Recall Type Information Element in mobile radio interface Layer 3 specification?
Option 1: To initiate a new call setup
Option 2: To modify existing call parameters
Option 3: To terminate an ongoing call
Option 4: To describe the reason for the recall
Explanation: The Recall Type Information Element is used to provide information about why a recall was initiated, allowing the receiving entity to understand the context and take appropriate action. This is crucial in managing calls and ensuring seamless communication in mobile networks.