Question: In Iu mode, when a UE loses radio coverage, what happens to a preserved PDP context using streaming or conversational traffic class with a TFT set by the MS, after failed RRC re-establishment?
Option 1: The PDP context is deactivated, and the maximum bit rate is set to its original value.
Option 2: The PDP context is preserved, but the maximum bit rate is downgraded to 0 kbit/s (for both uplink and downlink).
Option 3: The PDP context's QoS is upgraded to ensure continuous communication.
Option 4: The UE automatically initiates a new PDP Context Activation procedure.
Explanation: According to telecom standards, when a UE loses radio coverage and RRC re-establishment fails for a PDP context using streaming or conversational traffic class with a TFT set by the MS, the PDP context may be preserved but with its maximum bit rate downgraded to 0 kbit/s for both uplink and downlink, effectively pausing data transfer until conditions improve.