What does "is someone picking up?" mean in English for Spanish?

In English for Spanish, "is someone picking up?" means:

¿va a recoger alguien?

Listen to "is someone picking up?": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a phrase that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 3, Level 1, Scene 5