Question: During PDP context activation/modification in a UMTS network, what action does the GGSN take if all requested UMTS QoS parameters exceed the Authorized UMTS QoS limits for Conversational/Streaming Traffic Class?
Option 1: Accepts the PDP context activation/modification without changes
Option 2: Downgrades the requested Guaranteed Bitrate DL/UL to match the Maximum Authorized data rate DL/UL
Option 3: Rejects the PDP context activation/modification request entirely
Option 4: Requests additional information from the UE before making a decision
Explanation: For Conversational or Streaming Traffic Classes, the Guaranteed Bitrate is crucial. If requested parameters exceed authorized limits, the GGSN won't accept as-is (eliminating Option 1) nor reject entirely without finding a compatible solution (eliminating Option 3). Requesting UE information (Option 4) isn't directly related to handling exceeded QoS limits. Thus, downgrading Guaranteed Bitrate DL/UL to match Maximum Authorized data rate DL/UL (Option 2) is the appropriate action, ensuring network resource management integrity while accommodating the user's request as fully as possible.