Question: In a scenario where UE and AF do not share an algorithm for assigning ordinal numbers to media components, how are ordinal numbers assigned to uplink and downlink IP flows when multiple IP flows are assigned at the same time?
Option 1: Uplink IP flows are assigned higher ordinal numbers than downlink IP flows based on increasing internet protocol numbers (e.g., TCP, UDP).
Option 2: Both uplink and downlink IP flows are assigned ordinal numbers solely based on increasing port numbers, regardless of the internet protocol.
Option 3: Uplink and downlink IP flows are combined and assigned ordinal numbers based on decreasing internet protocol numbers (e.g., UDP, TCP).
Option 4: All uplink IP flows are assigned lower ordinal numbers than all downlink IP flows, with each set further ordered by increasing internet protocol numbers (e.g., 6 for TCP, 17 for UDP).
Explanation: According to the rules for scenarios where UE and AF do not share an algorithm, when assigning ordinal numbers to multiple IP flows at once, all uplink IP flows must be assigned lower ordinal numbers than all downlink IP flows. Additionally, within each of these sets (uplink and downlink), the flows are further ordered based on increasing internet protocol numbers. This ensures consistency and predictability in flow identification across the network.