ASCOM d83 Manual page 40

Handset Configuration
Zone Presence Configuration
The Zone presence feature tracks handset location with IR beacons making zones. When entering a zone,
the handset sends a message with location history to the system. If Zone presence is enabled, the location
message is sent at handset startup even if the handset is not in the range of any zone.
The handset is considered to have left the zone if the handset has not detected any IR beacon used for
Zone presence for a certain period configured with the Out of zone time (seconds) parameter.
The handset sends location update if:
• The handset has detected another IR beacon used for Zone presence.
• The handset has not left the zone, but the period configured with the Zone update time (minutes)
parameter has expired.
Two Zone presence setups are possible:
1. All IR beacons are used for Zone presence. The Zone presence behavior is always applied.
2. A group of IR beacons used for Zone presence is making a zone range. If the handset detects an IR
beacon related to the zone range, the Zone presence behavior is applied. If the handset detects an IR
beacon that is not related to the zone range, the default IR location behavior is applied.
To enable and configure Zone presence, perform the following steps:
1. In Device Manager, navigate to Location.
2. For IR Location select On.
3. Navigate to Location → IR Location → Enable zone presence.
4. For Enable zone presence select Enabled.
5. In the Out of zone time (seconds) field enter the period after which the system will consider that the
handset has left the zone if it is not detecting an IR beacon anymore.
6. In the Zone update time (minutes) field configure the recurrent period when the handset sends location
update.
7. If the Zone Range option is disabled, each IR beacon is considered as an individual zone. To limit the
number of IR beacons that should be used for Zone presence, select Enabled for "Zone range". The
Zone range feature requires a filter that will help to mark the beacons as making the zone:
− In the Zone flter field enter the starting value for IR beacon IDs in the zone range, for example, A200.
The possible value range for the Zone filter field is 0000-FFFF (hexadecimal), the default value is
0000.
− In the Zone filter mask field enter a 4–digit value using F for significant bits in an IR beacon ID and 0
for other bits. For example, enter FF00 to determine a zone range between A200 and A2FF — all
beacons ID starting with A2 will be included. The possible value range for the Zone filter mask field
is 0000-FFFF (hexadecimal), the default value is 0000.
The zone filter mask is calculated in a similar way as a subnet mask is defined in an IP network. The
system performs the following check to define if the beacon belongs to the zone range:
− Performs the logical bitwise AND operation on each pair of the corresponding bits of the IR beacon
ID and "Zone filter mask". if a bit in the mask is equal to 0, the result is 0, for example:
0x1204&0xFF00=0x1200
− Compares the result of the operation with the "Zone filter" value. If the values are equal, the IR
beacon is related to the zone range and is used for Zone presence.
Example: For zone range 0x0000-0x0FFF (4096 different zones are possible), the Zone filter is
0x0000 and the Zone filter mask is 0xF000
− IR beacon ID 0x1204 does not belong to the zone range: 0x1204 & 0xF000 = 0x1000.
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CONFIGURATION MANUAL
Ascom d83 DECT Handset
TD 93426EN / 28 January 2022 / Ver. C