Legacy System Modernization | Add AI to Old PBX Systems Without $500K Replacement Costs
Modernize 20-year-old phone systems with AI capabilities in 60 seconds, not 18 months
Legacy PBX systems don't have to mean legacy customer experiences. Instead of expensive system replacements that cost hundreds of thousands and take months to deploy, VoiceInfra's Legacy Modernization instantly upgrades your existing Avaya, Cisco, or Mitel infrastructure with cutting-edge AI capabilities through seamless SIP integration.

Key Advantages
Discover how our AI voice agents transform your business
Zero System Replacement
Keep your existing PBX hardware and add AI capabilities instantly
60-Second Integration
Point your SBC to our SIP endpoint and deploy AI agents immediately
$500K+ Cost Savings
Avoid expensive system replacements while gaining modern AI capabilities
Legacy System Compatibility
Works with 20+ year old Avaya, Cisco, Mitel, and Asterisk systems
Gradual Migration
Modernize specific departments or call types without affecting others
Future-Proof Investment
Add modern capabilities while preserving existing infrastructure investment
Key Benefits
Transform your business operations with measurable results
Modernize legacy PBX systems without expensive replacements
Deploy AI capabilities in 60 seconds via simple SIP integration
Save $500K+ compared to complete system replacement costs
Maintain existing staff training and operational procedures
Preserve infrastructure investment while adding modern features
Eliminate vendor lock-in with standards-based integration
Scale modernization gradually across departments and locations
Future-proof operations without disrupting current workflows
How It Works
Our implementation process is designed for quick and efficient deployment
Legacy System Assessment
Evaluate your existing PBX capabilities, SIP compatibility, and modernization requirements.
SIP Integration Setup
Configure your Session Border Controller to route calls through VoiceInfra SIP endpoint.
Gradual AI Deployment
Start with specific departments or call types and gradually expand AI capabilities.
Staff Training & Transition
Train staff on new AI capabilities while maintaining familiar operational procedures.
Performance Optimization
Monitor performance and optimize AI integration based on usage patterns and feedback.
Success Metrics
Real results that impact your bottom line
$500K+
Cost Savings
Savings compared to complete system replacement
60s
Deployment Time
Time to add AI capabilities to legacy systems
20+
Years Supported
Age of legacy systems that can be modernized
0
Downtime
Service disruption during modernization process
Implementation Timeline
Get up and running quickly with our streamlined deployment process
Day 1-2
Initial setup and system integration
Day 3-5
Configuration and testing phase
Day 6-7
Training and optimization
Day 8+
Full production deployment
Getting Started
Everything you need to know to begin your voice AI journey
What You'll Need
- Existing phone system or SIP provider
- Basic business requirements document
- 30 minutes for initial setup call
What We Provide
- Dedicated onboarding specialist
- Custom voice agent configuration
- Ongoing support and optimization
Most customers are live within 1 week of initial contact
Why Choose VoiceInfra
Built by engineers who understand the complexity of voice AI
Multi-LLM Architecture
We support multiple AI models (OpenAI, Anthropic, Google) so you're not locked into one provider. Switch models based on cost, performance, or specific use cases.
True SIP Integration
Unlike competitors who require you to change carriers, we integrate directly with your existing phone infrastructure. Keep your numbers, keep your carrier.
Developer-First Platform
Built by developers for developers. Full API access, webhook support, and custom function integration. No black box limitations.
Ultra-Low Latency
Sub-second response times with optimized voice processing. Your customers won't experience awkward pauses or delays in conversation.
Enterprise Security
SOC 2 compliant infrastructure with end-to-end encryption. Your data and your customers' data remain secure and private.
White-Glove Support
Direct access to our engineering team during setup and beyond. We're invested in your success, not just your subscription.
Common Challenges We Solve
The problems businesses face that led us to build VoiceInfra
High Support Costs
Hiring, training, and retaining customer service staff is expensive and time-consuming, especially for 24/7 coverage.
Missed Opportunities
Calls go unanswered after hours, on weekends, or during busy periods, leading to lost leads and frustrated customers.
Inconsistent Service
Human agents have varying skill levels, bad days, and different approaches, leading to inconsistent customer experiences.
Complex Integration
Most voice AI solutions require changing phone carriers or complex technical implementations that disrupt existing workflows.
Frequently Asked Questions
We support PBX systems up to 20+ years old, including legacy Avaya, Cisco, Mitel, and Asterisk installations. If it supports SIP, we can modernize it.
No. Legacy modernization adds AI capabilities without changing your existing phone system operations. Your staff continues using familiar procedures while gaining AI benefits.
Typically 90% less than complete system replacement. Instead of $500K+ for new hardware and installation, you pay only for AI services while keeping existing infrastructure.
Gradual modernization is recommended. Start with specific departments, call types, or locations and expand AI capabilities over time based on success and requirements.
Related Use Cases
Explore other ways VoiceInfra can transform your business
Live CRM Updates | Real-Time Customer Data Integration & Automation
Update your CRM in real-time during customer conversations with AI automation
Support Automation | AI-Powered Support Ticket Management & Issue Resolution
Comprehensive help desk automation with AI that resolves issues and manages tickets intelligently
Automated Workflow Triggers | Business Process AI
Trigger automated workflows and business processes with intelligent voice interactions
Industry Applications
See how this solution applies across different industries
Enterprise
Scale customer service operations while maintaining quality and reducing costs through intelligent automation.
Small Business
Compete with larger companies by providing 24/7 professional customer service without additional staff.
Growing Companies
Scale your customer service capabilities as you grow without proportional increases in operational costs.
Technical Specifications
Enterprise-grade infrastructure built for reliability and scale
99.9% Uptime SLA
Enterprise-grade reliability with redundant infrastructure
Sub-second Response
Ultra-low latency for natural conversation flow
Global Infrastructure
Worldwide coverage with regional data centers
SOC 2 Compliant
Enterprise security standards and data protection
Ready to transform your operations?
Schedule a demo to see how our solutions work for your industry.