Specifications include, but are not limited to: This system will have expandable capabilities, meaning that the Visitor Intercom system will be able to be replicated or expanded to include additional facility entrances that might be needed in the future, without the need to purchase an additional standalone visitor intercom system. The visitor intercom system must integrate with the current Lenel OnGuard 7.3 security software system utilized for access control at this facility. Visitor entrances are equipped with Indala card readers. Meaning, when a staff authorizes entry and activates the door release function, the Visitor Intercom System must override the card reader and locking mechanism to release the door for visitor entry.