Networking Call Etiquette?

I am a sophomore at a target currently networking for S&T at BB banks in the summer of 2018.

I have several calls set-up with MDs and recruiters who I met at on-campus events. I think they remember me from the info sessions and coffee chats; however, I'm not sure if they have access to my resume. Is it bad if I send them a copy of my resume before the call? Or should I wait until after?

Also, any general tips about how to approach this calls would be greatly appreciated. Thanks!