Could anybody describe the launch sequence of the SS-N-20?

Here is translated description(from russian) about the launch mechanism of SS-N-20:
“In the mine of submarine the rocket is in the suspended state, resting by special amortization system on the starting stem (carrier ring), located in the upper part of the mine. Rocket- starting system ensures the amortization of rocket, hermetic sealing the cavity of mine and safety of rocket for the submarine. Missile takeoff from the “dry” mine is ensured by the solid-propellant gas generator, placed on the bottom of mine in the engine nozzle of first stage. At the moment of start special solid-propellant grains, located on amortization rocket- starting system, create the gas current protection in the form of cavity, which substantially decreases the action of any incident flow on the rocket in motion of submarine. Command to the starting of first-stage engine will be given at the moment of the output of rocket from the mine. After output from the water the rocket for purposes of providing safety takes away to the side from the submarine, from the rocket starting system is removed by special engines and also it takes away to the side. Engine blocks of both steps are prepared from the composite material with the method of the coil of threads slime “cocoon”. Control system had an equipment of celestial correction.”

And here is video of SS-N-20 launch.The rocket is then blown up by the ground.