System Description

TD 93025US
9 May 2019 / Ver. I 92
System Description
teleCARE IP
9.12 Typical Examples of teleCARE Wireless with Loiter Alarm
Loiter alarm messages are generally not generated immediately after a wireless module is
detected at a (loiter enabled) location, and therefore a loiter alarm will be generated after a
predefined delay time (between 30 and 600 seconds) expires.
9.12.1 Loiter Control Sequence
1 A resident approaches a normally unlocked door that is closed. The NILF periodically transmits
an LF signal containing the NILF ID which is received by the resident’s NITX mobile transceiver.
2 When the NITX receives the active NILF’s ID signal it transmits an RF signal which contains the
NITX ID and the ID of the active NILF. This message is received by the NIRX that is mounted on
the NIRC3 room controller.
3 The NIRX then transmits a message which includes the identity of the NITX and the identity of
the NILF to the wireless server (NISM2) for processing.
4 If the NITX ID is not authorized to pass through that door the NISM2 sends a message to the
NIRC3 room controller to lock the door.
5 The NIRC3 room controller sends a “lock door” signal to the NICR card reader.
6 The NICR card reader activates the electric door lock to lock the door.
7 After a predefined delay time (between 30 and 600 seconds) a loiter alarm message will be
initiated to inform the responsible staff member.
8 If Configured, the loiter alarm message can also be signalled on linked devices like doorside
modules, corridor lamps and text displays.
Note: If meanwhile the door is opened by a staff member, who has access to the location, a
wander alarm message will be initiated if the resident is still hanging around the location
and the responsible staff member will be informed.