E-mail or phone to obtain their Username.Code (Bob.1234)
Select People button in Address Book and type Username.xxxx next to + at bottom then press Enter.
Click Call on their remote AV window or AV message them for time to connect. You can also send them text messages.
[further help here]

E-mail or phone to obtain their Username.Code (Bob.1234)
Select People button in Address Book and type Username.xxxx next to + at bottom then press Enter.
Click Call on their remote AV window or AV message them for time to connect.
[further help here]