Voice OTP and Bulk OBD: The Channel Still Missing From Most SMS Platforms
Most SMS gateways stop at text. SMPPCenter’s voice_call plugin adds two genuinely different things over a phone call instead: one-way bulk broadcast calls (OBD) and a dedicated Voice OTP action for reading a one-time code aloud. Neither one is IVR, and the difference matters if you’re evaluating this for a bank, fintech, or resale business.
