Via the MQTT interface an application server is able to request the Location from the handset.

The location information can be based on:

  • DECT
    • Supported by: SL800H / S700H / R700H / S650H / SL750H / OpenStage M3
    • Provides raw DECT RSSI values 
  • Bluetooth
    • Supported by: SL800H / S700H / R700H
    • Provides Bluetooth RSSI values transmitted by BLE beacons
  • DECT and Bluetooth
  1.  Example set-up using Ubuntu server

1. Example set-up using an Ubuntu server

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The following test environment is used for the documentation.

Ubuntu preparation
First we installed the mosquitto client: sudo apt install mosquitto-clients

Host file:

Add the N870 to your host file in case you want to use a DNS name. (/etc/hosts)

127.0.0.1       localhost
127.0.1.1       Int-VirtualBox
192.168.178.192 int-589ec60e71c0
 
# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

2. How to see the MQTT response

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Before you start sending the first location request, you would also like to see the response of the Cordless system.

If you want to see the MQTT communication/response from the N670/N870 you can do this by opening a new command line window on the Linux PC and enter the command.


mosquitto_sub -u as1 --psk-identity as1 --psk 123456789012345678901234567890ab -t +/+/as1/pos/# -p 8884 -h 192.168.178.190 -v