Sierra Wireless / Semtech
AirLink modem path: SIM/APN, RSSI in metal cabinets, antenna connectors, FW bricks, wrong APN after SIM swap. RSSI OK ≠ stable OCPP websocket.
Models
Fault index (5)
MDM-RSSISierra Wireless / Semtech · AirLink modem · Modem / cellularFree sampleRSSI too low in cabinet
RSSI too low in cabinet on sierra-wireless (airlink): AirLink ALEOS / LED pattern shows MDM-RSSI. Techs see session abort or stall Unavailable until the ranked cause is cleared. Correlate Modem signal log + OCPP disconnect timestamps before opening the cabinet.
MDM-ANTSierra Wireless / Semtech · AirLink modem · Modem / cellular solo+Antenna connector loose
Antenna connector loose on sierra-wireless (airlink): AirLink ALEOS / LED pattern shows MDM-ANT. Techs see session abort…
MDM-SIMSierra Wireless / Semtech · AirLink modem · Modem / cellular solo+SIM not provisioned APN
SIM not provisioned APN on sierra-wireless (airlink): AirLink ALEOS / LED pattern shows MDM-SIM. Techs see session abort…
MDM-FWSierra Wireless / Semtech · AirLink modem · Modem / cellular solo+Modem FW bricks OCPP path
Modem FW bricks OCPP path on sierra-wireless (airlink): AirLink ALEOS / LED pattern shows MDM-FW. Techs see session abor…
MDM-APNSierra Wireless / Semtech · AirLink modem · Modem / cellular solo+Wrong APN after SIM swap
Wrong APN after SIM swap on sierra-wireless (airlink): AirLink ALEOS / LED pattern shows MDM-APN. Techs see session abor…