Voice AI & Telephony
VAPP
A carrier-grade SIP voice platform stitched across six different speech providers.
The problem
VAPP needed a carrier-grade voice platform that could plug into whichever speech provider made sense per client, without rebuilding the pipeline each time.
How it works
1 · CALL TRIGGER
Inbound/outbound SIP call
via Twilio
2 · PROVIDER ROUTING
Provider router
picks the right speech engine per client config — OpenAI Realtime, Gemini Live, ElevenLabs, Cartesia, PlayHT, or Sarvam
3 · CONVERSATION ENGINE
Realtime conversation handling
streamed audio in both directions
4 · QUALITY MONITOR
Call quality checks
latency + dropped-audio monitoring
5 · LOGGING
Call log + recording
stored per client
6 · DELIVERY
Client dashboard
call outcomes surfaced to the client
RUNS ACROSS EVERYTHING — provider abstraction layer
- · Swap speech providers per client without rebuilding the pipeline
- · DigitalOcean droplet infra
What we built
- · SIP telephony via Twilio
- · A provider-abstraction layer across six speech engines
- · Realtime conversation handling
- · Deployed on a DigitalOcean droplet
Stack
Results
103,000 (billed)
Deal size
6
Speech providers supported
If you need to support multiple speech providers without a rebuild each time, this is the pattern.
Tell us your use case.
We'll build and run it.
AI voice agents, founder automations, and chatbots that run your business operations 24/7.
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Udyam Registration No: UDYAM-RJ-17-0595127
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