Question: What happens to the PTT (Push To Talk) timer when the `+CAPTT` command with `<mode>` set to "1" (Pushed for a limited time) is executed again before the initial `<time>` expires?
Option 1: The PTT key is immediately released, and the new `<time>` value is ignored.
Option 2: The PTT timer resets to its default value of 10 seconds, overriding the new `<time>` value.
Option 3: The PTT timer is loaded with the new `<time>` value, and the PTT key remains "Pushed" for the period of the new `<time>` in seconds.
Option 4: An unsolicited result code `+CAPTT: 0` is immediately issued to the TE (Terminal Equipment).
Explanation: According to the command syntax description for `+CAPTT`, if the command execution is repeated before the `<time>` expires, the PTT timer will be updated with the new `<time>` value, and the PTT key remains in the "Pushed" state for the duration of this new time period. This behavior ensures seamless continuation of the Push To Talk function without interruption.