When we say something is "within reach or call", we mean that it is easily accessible or available. There are many synonyms for this phrase, including "close at hand", "within easy reach", "within grasp", "within range", "available", "at one's fingertips", and "reachable". All of these terms suggest that the object or person in question is nearby and can be quickly reached or accessed. Whether we are referring to a physical object or a person we need to communicate with, these synonyms capture the idea that they are close enough to be easily reached or contacted.