Deliver one-time passcodes by automated voice call the moment SMS fails, so verification never stalls on icpaas.ai.
When an SMS OTP is delayed by carrier congestion, DND filters or a roaming handset, customers abandon sign-ups and payments. icpaas.ai's OTP Voice Fallback automatically places a voice call that reads the passcode aloud in clear Hindi, English or regional languages, ensuring every user completes verification without waiting or retrying again.
Built on our TRAI-registered telecom infrastructure and backed by a 99.9% call-completion SLA, the service triggers within seconds of an undelivered text. icpaas.ai handles text-to-speech generation, retry logic and detailed delivery reporting through a single API, giving your authentication flows a dependable second channel across pan-India networks since 2015.
Detects undelivered or delayed text OTPs and triggers a voice call within seconds, with no manual intervention needed.
Reads passcodes digit by digit in Hindi, English and regional languages using natural text-to-speech for clarity.
Fire OTP and fallback through one REST endpoint, returning real-time status codes your backend can act on instantly.
Set ring duration, repeat reads and attempt limits so genuine users always hear the code before timeout.
Track call completion, pickup rates and verification success per number in real time from a unified dashboard.
Transactional voice OTPs route over registered TRAI templates, reaching DND-listed numbers within regulatory norms reliably.
Design agent queue priorities and set working-hour call rules.
Upload professional voice greetings in regional languages.
Integrate click-to-call buttons and OTP voice lines to backend portals.
Review call length metrics, response rates, and agent efficiency.
Join the brands growing sales, routing customer inquiries, and capturing leads with cloud telephony on icpaas.ai. Talk to our team and go live this week.