call to (someone)
To shout to someone in an attempt to draw attention to oneself. I called to my best friend when I saw her walking down the street, but she had headphones on and couldn't hear me. I had so many grocery bags to bring inside that I had to call to my husband to come help.
call to someone
to shout to get someone's attention. I called to Fred, but he didn't hear me. Did you hear me call to you?