Connectivity Is Almost Free
Imagine a single IoT network that is cost-effective enough to send 12,000 messages per device each month, for a monthly subscription fee of US$2. Imagine a single IoT network that is globally available and guaranteed to persist for as long as you need it. Finally, imagine that such a network is already up and running and just waiting for you to connect your devices to it. It sounds too good to be true, but this is the premise of Thingstream, an MQTT-over-USSD-based IoT communication service.
Thingstream is the only cellular Internet of Things (IoT) connectivity provider currently using Message Queuing Telemetry Transport (MQTT) over Unstructured Supplementary Service Data (USSD) as its bearer. USSD is an oft-forgotten cellular protocol that uses the signaling channel to transmit 182-character messages in a real-time two-way session. USSD is embedded into all GSM-evolved technologies and is designed for communications between...
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