TD 92639GB
2009-12-08/ Ver. C
Configuration Manual
Ascom d62 DECT Handset
21
5.13 Base station positioning
An approximate location of the handset is possible to sent along with an alarm. The
handset evaluates the field strength ratio of the individual radio Base Stations and sends
the best-rated Base Station ID to indicate an approximate location of the handset.
In addition, a system can also request the Base Station ID regardless if an alarm is sent or
not. See
5.16
Poll Location
on page 22.
In a template or Number in PDM/IMS2, the parameter for activation is found at:
Location > Base station positioning
Note:
The standby time for the handset will be lower when Base station positioning is
activated.
5.14 DECT Location
Note:
This is a license dependent feature, see
4.4
Upgrade handset by license
on page 8.
The parameter “DECT Location” for the Location Device must also be enabled. Contact
the system administrator for more information.
The DECT Location feature is equipped with DECT location devices which continuously
transmit location information to the handset, that is location ID and threshold value. The
handset stores the four last received location IDs, see also
5.14.1
Location Test
on page
21.
When an alarm is sent, the four last stored location IDs, together with the time since they
were received, are transmitted to give an indication of the location of the handset.
In addition, the location IDs can also be sent to the system regardless if an alarm is not
sent (see
5.15
Special Location
on page 22), and a system/application can also request a
handset’s location (see
5.16
Poll Location
on page 22).
In a template or Number in PDM/IMS2, the parameter for activation is found at:
Location > DECT location
5.14.1 Location Test
When a DECT location system is installed, a handset with this feature has to be used for
location test. The handset will display the received location data in the following format:
LR: <Number of received locations > LV: <Number of valid locations>
LT: <Time in seconds since last current location ID was received>
L1: <Location ID>, S: <Signal strenght>, T: <Threshold value>
L2: <Location ID>
L3: <Location ID>
L4: <Location ID>
LR is a counter that displays the number of received locations within the range of a
Location Device(s), regardless of threshold level in the Location Device is exceeded or not.
LV is a counter that displays the number of received locations within the range of a
Location Device(s) with a signal strength greater than the threshold value, that is, a valid
location.
LT is a counter that displays the elapsed time in seconds since the current location (L1) was
received. It stops counting when it reach its maximum value, that is, 65535 seconds.
