Telephony & Voice Architecture

Deep dive into the low-latency audio streaming, schedule validation, and duplex SIP telephony powering AnserTech front-desk operations.

END-TO-END VOICE PIPELINE

How OBI Handles Incoming Phone Calls

STAGE 01

Acoustic Ingestion (STT)

<120ms PSTN STREAM

Captures caller speech over PSTN, cellular, and SIP connections with real-time acoustic normalization and noise suppression.

STAGE 02

Business Logic & Calendar Routing

REAL-TIME CALENDAR & CRM SYNC

Evaluates staff availability, verifies booking schedules, prevents double-bookings, and answers business FAQs without latency pauses.

STAGE 03

Neural Voice Synthesis (TTS)

NATURAL HUMAN CADENCE

Synthesizes warm, reassuring spoken responses in English, Hindi, and 10 regional Indian languages with natural conversational inflection.

ENTERPRISE GRADE RELIABILITY

Engineered for Busy Front Desks

Our telephony infrastructure handles simultaneous customer phone calls with zero dropped lines. Inbound audio streams are processed in-memory with strict data isolation.

Sub-Second Streaming

Full-duplex audio pipeline eliminates awkward caller pauses.

Multilingual Cadence

Native English, Hindi, Tamil, Telugu, Marathi dialect adaptability.

REST TELEPHONY WEBHOOKS

Connect Direct Business Triggers

Send booking reminders, customer follow-up calls, or fetch live call transcripts using standard REST JSON payloads.

POST /api/v1/calls/dispatch
200 OK
{
  "to": "+919876543210",
  "customer_name": "Rahul Sharma",
  "appointment_date": "2026-09-17",
  "appointment_time": "10:30 AM",
  "business_name": "Apex Studio & Services",
  "purpose": "booking_confirmation",
  "language_preference": "hi-IN"
}
Response Time: 42msDuplex WebSockets v2