How Phone Stack Works
From sign-up to answering your first call in 7 simple steps. No technical setup required.
Sign Up & Verify Your Business
Create your account in under 5 minutes. Verify your business information so callers see your company name on their end.
Chat With Your AI Agent
Train your AI by describing how you handle calls today — common questions, escalation rules, and how you greet callers. No forms, just talk.
Upload Your Knowledge Base
Upload FAQs, product docs, policies, and pricing. Your AI agent will reference these in real time to answer caller questions accurately.
Pick a Voice
Choose a natural-sounding voice for your AI receptionist. Match your brand's tone — professional, warm, or friendly.
Configure Call Routing & Greeting
Set up your greeting message, define routing rules, and configure escalation paths. Decide when AI handles calls vs. when to transfer to your team.
Assign a Phone Number
Get a toll-free, local, or vanity number — or forward your existing number to Phone Stack. Your AI agent is now live and ready to answer.
Go Live & Monitor Calls
Start receiving calls. Watch live transcripts, listen in on conversations, and review AI performance. Barge in to take over any call if needed.
Ready to Get Started?
Start answering calls with AI in under 30 minutes.
Start Free Trial