W&king up to the ring of a telephone in a dream may mean that someone is trying communicate something telepathically to you through the dream state.
If you are in the middle of having a conversation with someone and the phone suddenly goes dead, this may indicate frustration about being cut off by someone Dialing a wrong number may represent that your perceptions of someone are wrong or that you are approaching the wrong person for what you need.... Ariadne's Book of Dream
Dreams of an emergency signify that you are releasing stress, anxiety, hurry, and worry. This dream may be flagging you down to pay attention to aspects of you that have been ignored for too long, and now they are in urgent need to be paid attention to. This dream is a wake up call.
If you are dialing 911, then you are calling out for help. You are in a situation that leaves you feeling helpless and you need support to return to balance. See Hospital.... Strangest Dream Explanations