A two call system is a system utilized by escorts during appointments that involve their date coming to them ("in calls"). The two call system requires that the date call once to obtain a general location and possibly parking instructions. Then, they call again upon arrival to get an exact address or room number.
More About Two Call System
The two call system serves several purposes. Among them include giving an escort more control over their situation. They know exactly when their date will be arriving at the door. It keeps their exact location private from all others except committed clients. It allows the escort the opportunity to see a date and possibly note anything that may be a cause for concern before they allow the date into their space.