Hi support team,
I am using EG25 / EC25 module for the MQTT connection with the Azure IoT hub service
Firmware version - EG25GGDR07A08M2G
Hardware version - EG25-G(D)
Authentication method id SAS token ( Symmetric key authentication )
Communication with DPS was successful and we received the device ID and assigned IoT hub details from the DPS
Issue :
When we tried to connect with the IOT hub then we are getting error in AT+QMTCONN command. Even if we repeat the following command sequence we are getting same result as +QMTSTAT: 0,1
[2023-07-21T12:28:49Z] Wrote To Cell: [AT+QMTOPEN=0,“IAB-IoT-Hub-UAT.azure-devices.net”,8883
[2023-07-21T12:28:49Z] Read from Cell: [OK]
[2023-07-21T12:28:49Z] Read from Cell: [+QMTOPEN: 0,0]
[2023-07-21T12:28:49Z] Wrote To Cell: [AT+QMTCONN=0,“88888889”,“IAB-IoT-Hub-UAT.azure-devices.net/88888889/?api-version=2021-04-12","SharedAccessSignature sr=IAB-IoT-Hub-UAT.azure-devices.net%5Cdevices%5C88888889&sig=I4H7p7Y3KOr9PG2cq%2FXkRg7EWIQkMz2lr5mk4p%2B2c1M%3D&se=1689976131”]
[2023-07-21T12:28:49Z] Read from Cell: [OK]
[2023-07-21T12:28:50Z] Read from Cell: [+QMTSTAT: 0,1]
[2023-07-21T12:28:50Z] Wrote To Cell: [AT+QMTOPEN=0,“IAB-IoT-Hub-UAT.azure-devices.net”,8883]
[2023-07-21T12:28:50Z] Read from Cell: [OK]
[2023-07-21T12:28:51Z] Read from Cell: [+QMTOPEN: 0,0]
[2023-07-21T12:28:51Z] Wrote To Cell: [AT+QMTCONN=0,“88888889”,“IAB-IoT-Hub-UAT.azure-devices.net/88888889/?api-version=2021-04-12","SharedAccessSignature sr=IAB-IoT-Hub-UAT.azure-devices.net%5Cdevices%5C88888889&sig=I4H7p7Y3KOr9PG2cq%2FXkRg7EWIQkMz2lr5mk4p%2B2c1M%3D&se=1689976131”]
[2023-07-21T12:28:51Z] Read from Cell: [OK]
[2023-07-21T12:28:52Z] Read from Cell: [+QMTSTAT: 0,1]
Note : We tested this same credential on MQTT fx and found no issue . successfully connected with broker