I meant these for EntityBeans of course.
You are going to have to expand on what you mean before I can give an answer.
Entity beans are POJOs.
I mean I had ejbTimeout facility for EntityBeans in ejb 2.1.
Now I have to delegeate timeout reception to SessionBean which merely delegates control 'back' to EntityBean with ID stored in Info object of Timer object.
I did it previously through EntitiyContext interface instance of which I received via setEntityContext(...) callback method and .getTimerService() thereafter.
In jboss-ejb3 nor TimerService nither EntityContext are injected to entities.
In specification, though, there are no words that entities cannot have TimerService injected.