However, it's important to understand that this is a very incomplete translation. It's like saying "If calls" or "Whenever calls".
To get a more accurate meaning, you need more context. Here are some possibilities:
Examples with "When Calls":
* "When calls, answer the phone." (Cuando llama, contesta el teléfono)
* "When the phone calls, it's usually important." (Cuando el teléfono llama, normalmente es importante)
* "When the doorbell calls, I'll open the door." (Cuando el timbre llama, abriré la puerta)
Examples with "Whenever":
* "Whenever he calls, I'll be there for him." (Siempre que llama, estaré allí para él)
* "Whenever you need something, just call me." (Siempre que necesites algo, solo llámame)
Other possibilities:
* "When he calls" (Cuando él llama)
* "When she calls" (Cuando ella llama)
To provide you with the best translation, please give me more context. For example, tell me the entire sentence or situation where you heard "Cuando llama."