FAQ - Application server connection examples PSK

Introduction

On this page we would like to show some connection examples using Pre-shared-key (PSK) and error descriptions.

Set-up:

Nx70 software 2.44.0
DECT handset R700H software release 11
Linux Ubuntu system to send MQTT messages
mosquitto_sub version 1.6.9 running on libmosquitto 1.6.9.
Application server enabled FAQ - Application servers
Messaging and Location enabled for the handset FAQ - Messaging and Location how to enabledisable per handset

MQTT message example:

Prio 1 message
To handset with SIP ID 1013
With "Fire" icon and some text
Nx70 IP address: 192.168.178.190, Port 8884

MQTT example

mosquitto_pub -u as1 --psk-identity as1 --psk 123456789012345678901234567890ab -t 'as1/msg/xxl/msgsrv/req/setMsg' -m '{"msgId":"1","payload":{"amsgId":"23642","sip_id":"1013","msg":{"server_msg_status":"new","prio":"1","title":{"text":"Message prio 1","color":"04"},"status_icon":"0D","status_text":"accept","ttl":"600","alert_info":"msg_melody_low","overrule_silencing":"no","vibration":"no","ringtone_volume":"50","deletable":"yes","local_ignore":"yes","presentation_time":"30","body_starter":"Body starter","msg_icon":{"value":"28"},"body":[{"msg_icon":{"value":"4E","color":"04"}},{"paragraph":{"text":"Prio 1 message: some longer test to check how long the message can be","blink":"no","underline":"yes","bold":"yes","align":"left","color":"00"}},{"paragraph":{"text":"This text is only shown in detailed view","blink":"no","underline":"no","bold":"no","align":"left"}}],"reply_options":[{"option_id":"1","reply":{"text":"Msg1SK1"}},{"option_id":"2","reply":{"text":"Msg1SK2"}},{"option_id":"3","make_call":{"text":"Call","to":"1021"}}]}}}' -p 8884 -h 192.168.178.190

Syslog output - No error

MQTT New connection from 192.168.178.61 on port 8884.
Syslog New client connected from 192.168.178.61 as mosq-PQBgyaFiibZoW66I2k (c1, k60, u'as1').
...

Error: Wrong port number - port 8882

mosquitto_pub -u as1 --psk-identity as1.... -p 8882 -h 192.168.178.190

Error: Connection refused

Error: Wrong port number - using port 8885 for client certificates

mosquitto_pub -u as1 --psk-identity as1.... -p 8882 -h 192.168.178.190

Error: The connection was lost.

Syslog New connection from 192.168.178.61 on port 8885.

Syslog SSL routines:tls_process_client_certificate:peer did not return a certificate

Syslog Socket error on client <unknown>, disconnecting.\n

Connection error: Connection Refused: identifier rejected.

mosquitto_pub -u as1 --psk-identity as1.... -p 8882 -h 192.168.178.190

Connection error: Connection Refused: identifier rejected.
Error: The connection was refused.

Syslog New connection from 192.168.7.122 on port 8884.
Syslog Socket error on client <unknown>, disconnecting.

Solution: add -I 'as1' (Capital i)

mosquitto_pub -u as1 --psk-identity as1.... -p 8882 -h 192.168.178.190 -I 'as1'

Usage of "-i" parameter depends on the mosquitto version on host and device.
When version 2.0.11 (released on 26.11.2021) is on host and 1.5.4 on the device this additional parameter is needed

Error: Handset has no License enabled

mosquitto_pub -u as1 --psk-identity as1.... -p 8882 -h 192.168.178.190

There will be no error

Syslog AML messaging disabled for this hs: 035edb3a92\n

Error: MQTT username or password is wrong

mosquitto_pub -u as1 --psk-identity as1.... -p 8882 -h 192.168.178.190

Error: A TLS error occurred.