AI Voice Technology

Real-Time Voice AI Engine

WebSocket-powered calling infrastructure with ultra-low latency AI responses. Advanced conversation intelligence that understands, responds, and adapts in real-time.

320ms response time
WebSocket real-time
Live conversation tracking
25+ premium voices
320ms
Response Latency
99.9%
Uptime SLA
10K+
Concurrent Calls
50+
AI Functions
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Trusted by developers worldwide

Real-time monitoring
Enterprise grade
Real-Time Infrastructure

WebSocket-Powered Communication

Enterprise-grade WebSocket infrastructure built for high-performance, real-time voice communication with automatic scaling and failover.

WebSocket Session Management

sessionManager.ts

Advanced session management with connection pooling, health monitoring, and automatic failover

Multi-connection session handling
Inactivity detection (45s timeout)
Connection health monitoring
Automatic session cleanup
10K+
connections
< 50ms
latency

Real-Time Media Streaming

Media packet handling

Live audio streaming with media packet optimization and buffering for seamless conversations

Real-time audio processing
Media packet statistics tracking
Audio response buffering
Stream quality monitoring
1M+/day
packets
99.8%
quality

Connection Resilience

Connection management

Robust connection handling with ping/pong heartbeats, retry logic, and graceful degradation

Ping/pong heartbeat (30s)
Auto-retry mechanisms
Graceful connection cleanup
Error recovery protocols
99.9%
uptime
< 2s
recovery

Performance Optimization

sessionCache.ts

Advanced caching, session optimization, and real-time performance monitoring

Session state caching
Media response optimization
Connection state tracking
Performance analytics
320ms
response
95% hit
cache

WebSocket Connection Types

Twilio Connection
/call, /inbound, /outbound

Handles voice calls through Twilio's infrastructure

Frontend Connection
/logs

Real-time dashboard and monitoring interface

Recording Stream
/inbound_recording

Live call recording and transcription pipeline

API Endpoints

GET
/health
Health check monitoring
GET
/status
Connection status and metrics
GET
/tools
Available AI function schemas
POST
/outbound
Initiate outbound calls
POST
/status-callback
Call status webhooks
10K+
Concurrent Sessions
30s
Ping Interval
1M+
Packets/Day
99.9%
Uptime SLA
AI Conversation Engine

Intelligent Conversation Processing

Advanced AI engine that understands context, executes functions, and maintains natural conversation flow with enterprise-grade reliability.

Real-Time Transcription

conversationService.ts

Live audio-to-text conversion with conversation tracking and message processing

Live audio transcription
Conversation message tracking
User/assistant role detection
Automatic transcript cleanup
Event Types:
conversation.item.input_audio_transcription.completedresponse.audio_transcript.doneresponse.text.done

Intelligent Function Calling

functionHandlers.ts

50+ AI functions for appointments, DTMF control, and business process automation

DTMF tone generation
Appointment booking/canceling
Calendar integration
Custom business functions
Available Functions:
sendDTMFbookAppointmentcheckSlotAvailabilitycancelAppointment

OpenAI Integration

Real-time API

Direct integration with OpenAI's real-time API for natural conversation flow

Streaming audio responses
Context-aware conversations
Function call orchestration
Response optimization

Conversation Intelligence

Message processing

Advanced conversation analytics, message processing, and interaction insights

Conversation state management
Message role classification
Interaction analytics
Response quality monitoring
Performance Metrics:
Response accuracy: 98%
Context retention: 100%
Natural flow: 96%
User satisfaction: 94%

Real-Time Conversation Flow

Audio Input
User speaks into phone
WebSocket media stream
Real-Time Transcription
Speech-to-text conversion
OpenAI Whisper API
AI Processing
Context analysis and response generation
GPT-4 real-time API
Function Execution
Execute business functions if needed
Function handlers
Voice Response
Text-to-speech audio generation
Premium voice synthesis
Average processing time: 320ms

AI Function Examples

sendDTMF

Function

Send keypress tones during calls for IVR navigation

Parameters:
digits (0-9, *, #)reasondelay
Use Cases:

Skip voicemail, navigate phone menus, enter extensions

bookAppointment

Function

Schedule appointments with integrated calendar

Parameters:
datestartTimeuserNameemail
Use Cases:

Book meetings, schedule consultations, reserve slots

checkSlotAvailability

Function

Check available time slots for booking

Parameters:
dateduration
Use Cases:

Find open slots, suggest alternatives, optimize scheduling

98%
Transcription Accuracy
320ms
Response Time
50+
AI Functions
25+
Voice Options
Google Cloud Run

Enterprise Cloud Infrastructure

Purpose-built Google Cloud Run deployment optimized for WebSocket connections, real-time voice processing, and enterprise-scale performance.

Gen2 Execution Environment

Gen2 Runtime

Latest Google Cloud Run generation with enhanced WebSocket support and performance

Enhanced WebSocket handling
Better CPU performance
Lower cold start times
Improved network connectivity
+40%
performance
-25ms
latency

Always-Allocated CPU

cpu-allocated=1

Dedicated CPU allocation prevents WebSocket connection drops and ensures consistent performance

No CPU throttling
Consistent WebSocket performance
Prevents connection drops
Reliable real-time processing
99.9%
uptime
100%
stability

Optimized Concurrency

concurrency=10

Low concurrency (10 requests) optimized specifically for WebSocket connections

Better per-connection performance
Reduced resource contention
Stable WebSocket handling
Predictable response times
10 max
concurrent
99.8%
quality

Extended Session Timeout

timeout=1800s

30-minute timeout window supports long-duration voice calls and conversations

Long conversation support
30-minute call duration
No premature disconnections
Extended session reliability
30 min
duration
96%
success

Infrastructure Specifications

Auto Scaling

Min Instances
1

Always-on for zero cold starts

Max Instances
10

Auto-scale based on demand

CPU Utilization
65%

Target scaling threshold

Session Affinity
Enabled

Sticky WebSocket connections

Network & Security

Public URL
wss.notevibes.com

WebSocket secure endpoint

Port
8080

WebSocket server port

SSL/TLS
Always

End-to-end encryption

Region
us-central1

Google Cloud region

Environment

Runtime
Node.js 20

Latest stable runtime

Instance Class
F1

Standard instance type

Memory
Auto

Dynamic allocation

Environment
Standard

GAE standard environment

Performance Optimizations

Cold Start Elimination

Implementation:1+ min instance
Benefit:Zero latency calls

WebSocket Optimization

Implementation:Gen2 + low concurrency
Benefit:Stable connections

CPU Allocation

Implementation:Always-on CPU
Benefit:Consistent performance

Regional Deployment

Implementation:us-central1
Benefit:Low latency
wss.notevibes.com
WebSocket Endpoint
1-10
Auto-scaling Range
30min
Session Timeout
us-central1
Google Cloud Region

Experience Enterprise Cloud Infrastructure

Our Google Cloud Run deployment ensures your voice agents have the reliability and performance your business demands.

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Call Management

Enterprise Call Management

Comprehensive call management infrastructure with automated campaigns, real-time monitoring, and intelligent routing.

Inbound Call Handling

inboundCallHandler.ts

Advanced inbound call processing with automatic agent routing and context detection

Core Features:
Automatic agent assignment
Contact information lookup
Context-aware conversations
Real-time call routing
Technical Capabilities:
Phone number recognition
Caller identification
Agent availability checking
Call quality monitoring

Outbound Call Engine

outboundCallHandler.ts

Sophisticated outbound calling with campaign management and smart scheduling

Core Features:
Campaign execution
Smart retry logic
Contact list management
Credit verification
Technical Capabilities:
Scheduled call execution
Contact data enrichment
Call success tracking
Automatic fallback handling

Campaign Automation

campaignExecutor.ts

Automated campaign execution with intelligent scheduling and performance tracking

Core Features:
Multi-step campaigns
Timezone-aware scheduling
Performance analytics
Automated follow-ups
Technical Capabilities:
Campaign polling system
Call success metrics
Contact engagement tracking
ROI optimization

Call Recording & Analytics

recordingHandler.ts

Real-time call recording with conversation analysis and quality monitoring

Core Features:
Live call recording
Conversation transcription
Quality scoring
Performance insights
Technical Capabilities:
Real-time audio streaming
Conversation analysis
Call sentiment tracking
Agent performance metrics

Call Processing Pipeline

Call Initiation
Create outbound call with parameters
createOutboundCall()
Credit Verification
Check organization credits
checkSufficientCredits()
Agent Configuration
Load agent details and tools
getFullAgentDetailsFromDb()
Twilio Integration
Connect with Twilio infrastructure
twilio.calls.create()
Live Monitoring
Track call status and quality
Status callbacks

Campaign Types

Voice Only

Voice Only

Pure voice campaigns with AI agents

Natural conversations
Function calling
Real-time responses
Voice + Email

Voice + Email

Multi-channel campaigns with email follow-up

Voice outreach
Email sequences
Unified tracking
Voice + SMS

Voice + SMS

Combined voice and SMS campaigns

Voice calls
SMS follow-up
Cross-channel analytics

Smart Billing & Credits

Credit Management

checkSufficientCredits()

Real-time credit checking and usage tracking

Cost Optimization

Call cost calculation

Intelligent call routing to minimize costs

Usage Analytics

Usage tracking

Detailed billing and usage reports

10K+
Daily Calls
95%
Connection Rate
3s
Avg Call Setup
24/7
Availability
Technical Architecture

Scalable System Architecture

Enterprise-grade architecture designed for high performance, scalability, and reliability with real-time processing capabilities.

Frontend Layer

React-based dashboard with real-time WebSocket connections

Technologies:
Next.js 14
TypeScript
WebSocket Client
Real-time UI
Key Responsibilities:
• User interface management
• Real-time call monitoring
• Agent configuration
• Analytics dashboard

API Layer

Express.js REST API with WebSocket support and authentication

Technologies:
Express.js
WebSocket Server
JWT Auth
Rate Limiting
Key Responsibilities:
• HTTP API endpoints
• WebSocket connections
• Authentication & authorization
• Request routing

Call Processing Layer

Core calling infrastructure with session management

Technologies:
Session Manager
Connection Pool
Media Processing
Function Handlers
Key Responsibilities:
• Call session management
• Media packet processing
• AI function execution
• Connection health monitoring

External Integrations

Third-party service integrations and webhook handling

Technologies:
Twilio API
OpenAI Real-time
Firebase Admin
Webhook Endpoints
Key Responsibilities:
• Voice call routing
• AI conversation processing
• Data persistence
• Status callbacks

Technology Stack

Runtime

Node.js
18+
Server runtime
TypeScript
5.0+
Type safety

Framework

Express.js
4.18+
Web framework
WebSocket
ws 8.0+
Real-time communication

Database

Firebase Firestore
10.0+
NoSQL database
Session Cache
Custom
In-memory storage

External APIs

Twilio Voice
4.0+
Telephony infrastructure
OpenAI Real-time
Latest
AI conversation engine

Performance Optimizations

Session Caching

sessionCache.ts

In-memory session storage for ultra-low latency

95% cache hit rate
< 5ms access time
Memory optimization

Connection Pooling

sessionManager.ts

Efficient WebSocket connection management

10K+ concurrent connections
Auto-scaling
Health monitoring

Media Optimization

Media pipeline

Real-time audio processing and buffering

48kHz quality
Adaptive bitrate
Packet optimization

Error Recovery

Error handling

Automatic failover and retry mechanisms

99.9% uptime
Auto-retry
Graceful degradation

Enterprise Scale Performance

10,000+
Concurrent Sessions
Simultaneous voice calls
320ms
Response Time
Average AI response latency
1M+
Throughput
Messages processed daily
99.9%
Uptime SLA
Service availability guarantee

System Flow

Frontend
WebSocket Client
API Layer
Express + WebSocket
Call Engine
Session Manager
External APIs
Twilio + OpenAI
Performance Metrics

Enterprise-Grade Performance

Real-time performance monitoring with industry-leading metrics for latency, reliability, and scalability.

7,234
Active Calls
+12%
287ms
Avg Response
-5ms
99.2%
Success Rate
+0.1%
45K/s
Throughput
+8%

Response Latency

AI Response
320ms
excellent
WebSocket
24ms
excellent
Call Setup
3.2s
good
Function Exec
150ms
excellent

Reliability

Uptime
99.9%
excellent
Success Rate
98.7%
excellent
Completion
94.3%
excellent
Recovery
< 2s
excellent

Performance Guarantees

Enterprise SLA commitments backed by our infrastructure

99.9%
Uptime SLA
< 500ms
Response Time
10K+
Concurrent Calls

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