Question: What action is taken by the call control entity in the network upon receipt of a DISCONNECT message, with regards to running timers?
Option 1: All running call control timers are reset.
Option 2: A new timer is started, while existing ones continue to run.
Option 3: All running call control timers are stopped.
Option 4: The duration of all running call control timers is extended.
Explanation: When a DISCONNECT message is received by the call control entity in the network, it immediately stops all running call control timers as part of its procedure to clear the network connection and the call. This action is crucial for efficiently managing resources and transitioning into the "release request" state.