SMS Gateway Backend
Queues OTP and notification SMS jobs for your Android gateway device. The phone polls for pending messages, sends them over its own SIM, and reports delivery status back — securely, with device-key authentication.
Admin console
Gateway status, queue counts, error logs, and configuration (device key, OTP expiry, rate limits, timeouts).
Test console
End-to-end testing: generate an OTP, simulate the Android gateway, mark messages sent or failed, and verify codes.