www.securitymagazine.com/articles/78298-intercom-system-for-visitor-screening
Intercom System for Visitor Screening
May 1, 2007

Keep locked doors locked before letting in visitors. Aiphone’s JF series, an easy-to-install video intercom system, allows visitors to be screened via video. Both the JF standard and JF enhanced systems include door release and entrance monitoring. The enhanced version features built-in picture memory to record visitors, as well as a voice memo feature to leave messages on the inside station and an entrance message feature which allows for pre-recorded messages to be played to visitors.
Find out more at www.aiphone.com