ModelScale Portfolio Nova Voice Agent
Speech AI · Inbound Telephony Agent
🎙️

Sub-380ms Inbound Lead Qualification & Calendar Booking Telephony Trunk

Full-duplex telephony agent handling high-concurrency qualification calls across 12 languages with natural voice interruption, live CRM RAG lookups, and instant human rep hand-off.

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modelscale://portfolio/nova-voice
STATUS ● SHIPPED TO PRODUCTION
CLIENT B2B SaaS Company
INDUSTRY Enterprise Software & Financial Services
DELIVERY 4-Week Rapid Deployment
IP OWNERSHIP 100% Client
< 380ms
Spoken Turn Latency
12
Languages Supported
87%
Auto-Resolved Calls
< 380ms Spoken Turn Latency /
12 Languages Supported /
87% Auto-Resolved Calls /
< 380ms Spoken Turn Latency /
12 Languages Supported /
87% Auto-Resolved Calls /
Nova Voice Agent
Case Study Breakdown

The Problem. The Build.

The Core Bottleneck

Prospective high-value buyers calling inbound experienced 8-minute hold times or were pushed to web forms with 40% drop-off. Competitors with instant reps were closing deals first.

The ModelScale Architecture

We deployed Nova on a low-latency WebRTC and SIP trunk backbone. Using streaming ASR coupled with token-speculative LLM execution, Nova answers queries naturally, respects voice interruptions, and accesses Salesforce in real-time to qualify and book.

Delivered ROI

Production Outcomes

Hold Time
→ 0s

Every inbound call answered within 2 rings, zero queue wait

Lead Response Speed
14× faster

Versus average 4-minute human SDR pick-up time

Qualified Meetings Booked
+61%

Direct calendar booking rate from first call vs previous web form flow

Engineering Capabilities

What We Built Into It

[ 01 ]

Voice interruption handling — instantly pauses when caller speaks without robotic latency

[ 02 ]

Live CRM RAG — recalls prior email threads and contract tier before greeting caller

[ 03 ]

Post-call synthesis — summarizes sentiment, objections, and logs audio transcripts into HubSpot/Salesforce

[ 04 ]

Automated warm transfer bridging human reps in under 2 seconds

[ 05 ]

Regulatory disclaimers enforced dynamically per state/country recording laws

Stack & Infrastructure

Technologies Used

100% Open, Zero Lock-In
LiveKit WebRTC Deepgram Nova-2 Cartesia TTS FastAPI Twilio LangGraph Redis
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