To correct a few inaccuracies in previous posts.
1. Usually only the first prototype of a new design will be fitted with a spin chute (no rockets) which can be deployed by the crew in the event of a deep stall (as it is more commonly known with T-tailed aircraft) - and sometimes more important, jettisoned after use.
2. The Stall Protection System (SPS) usually has three phases (known as "firing angles" as they are triggered by Angle of Attack Vanes on either side of the aircraft) :
Lowest is Auto-Ignition that turns on the Igniters to ensure continued safe engine operation.
Then Shaker - to provide tactile & aural stall warning and Autopilot disconnect.
Finally the Stick Pusher will push the nose down to restore normal flight if the crew has not already done so.
The exact value of firing angle for a given model will depend on Flap & Slat setting, Mach Number & Lateral Acceleration (for sideslip).