Yes, should it all go quiet, you follow the plates step climb and end up at 4000'. Then, presumably at the end of the SID (KENET here) you climb to FPL, but to be honest, if it really has gone all quiet, ATC would just be trying to steer well clear of you. Radio fail procedures are one of the biggest mine fields into which to delve. Personally, I don't care what it says in our AIP. Who knows if you've read it? Steer well clear and expect anything is my preferred procedure. Quite probably a typhoon waving at the window may not be too far away.