Buy US Phone Numbers for AI Voice Agents

Need phone numbers for your AI voice agents? VoiceInfra lets you search, select, and purchase US phone numbers directly. Get AI-ready numbers with automatic SIP trunk configuration, monthly subscription billing, and per-minute usage rates. No hardware, no long-term contracts, no complex setup required.

Key takeaway: VoiceInfra phone numbers come pre-configured with SIP trunks and call routing. Just search available numbers by state, purchase via Stripe, and your number is ready for AI agent assignment in minutes.

Why Buy Phone Numbers from VoiceInfra

The Challenge: Phone Number Setup is Complex

Getting phone numbers for AI agents typically involves:

• Multiple providers - Buy numbers from one provider, configure SIP trunks with another

• Complex setup - SIP URI configuration, authentication credentials, transport protocols

• Hardware requirements - PBX systems, session border controllers, media gateways

• Long contracts - Annual commitments, early termination fees

• Hidden costs - Setup fees, channel charges, per-port fees

• AI integration gap - Numbers work for calls, but AI agent setup requires additional configuration

The VoiceInfra Solution: AI-Ready Phone Numbers

VoiceInfra provides phone numbers that are ready for AI from day one:

• Search and purchase - Browse available US numbers by state, select your number

• Instant activation - Numbers are active immediately after purchase

• Automatic SIP configuration - Inbound and outbound trunks configured automatically

• AI-ready - Assign AI agents directly to your numbers

• Transparent pricing - Setup fee + monthly subscription + per-minute usage

• No contracts - Cancel anytime, schedule cancellation, reactivate when needed

How VoiceInfra Number Provisioning Works

The Provisioning Process

Step-by-Step Provisioning

Step 1: Select Your State

• Choose from all 50 US states

• States organized by region (Northeast, Southeast, Midwest, Southwest, West)

• No area code filter required - VoiceInfra searches all area codes in your selected state

Step 2: Search Available Numbers

• Click "Search Available Numbers"

• VoiceInfra queries its number inventory

• Results displayed in a grid (9 numbers per page)

• Numbers shown in E.164 format (+1XXXXXXXXXX)

Step 3: Browse and Select

• View available numbers in card layout

• Click any number to select it

• Load more results if needed

• Start a new search to try different states

Step 4: Review Pricing

• Setup fee (one-time)

• Monthly subscription fee

• Per-minute inbound rate

• Per-minute outbound rate

• Total due today (setup + first month)

Step 5: Configure and Purchase

• Add friendly name (optional, 50 characters max)

• Read and agree to the terms

• Click "Purchase"

• Redirected to Stripe checkout

• Complete payment

Step 6: Number Activated

• The number appears in your VoiceInfra dashboard

• SIP trunks are configured automatically

• Ready for AI agent assignment

• Start handling calls immediately

Pricing and Billing

VoiceInfra Number Pricing Structure

VoiceInfra uses transparent, usage-based pricing:

Example Pricing (US Numbers)

VoiceInfra phone numbers are priced to be highly affordable, offering some of the lowest inbound and outbound termination rates in the industry.

• Setup fee: One-time, minimal charge

• Monthly subscription: Low per-number fee

• Inbound & outbound calls: Industry-low per-minute rates

• Total cost: Subscription + usage only

No hidden fees, no channel charges, and no long-term contracts. You only pay for what you use, making VoiceInfra significantly cheaper than traditional telephony providers.

Billing Features

• Stripe checkout - Secure payment processing

• Monthly billing - Subscription charged monthly

• Usage tracking - Per-minute billing for calls

• No hidden fees - Transparent pricing shown before purchase

• Cancel anytime - Schedule cancellation, no early termination fees

Phone Number Coverage

US Phone Numbers by State

VoiceInfra provides US phone numbers across all 50 states, organized by geographic region:

Northeast:

• Connecticut (CT), Maine (ME), Massachusetts (MA)

• New Hampshire (NH), New Jersey (NJ), New York (NY)

• Pennsylvania (PA), Rhode Island (RI), Vermont (VT)

Southeast:

• Alabama (AL), Arkansas (AR), Florida (FL)

• Georgia (GA), Kentucky (KY), Louisiana (LA)

• Mississippi (MS), North Carolina (NC), South Carolina (SC)

• Tennessee (TN), Virginia (VA), West Virginia (WV)

Midwest:

• Illinois (IL), Indiana (IN), Iowa (IA)

• Kansas (KS), Michigan (MI), Minnesota (MN)

• Missouri (MO), Nebraska (NE), North Dakota (ND)

• Ohio (OH), Oklahoma (OK), South Dakota (SD), Wisconsin (WI)

Southwest:

• Arizona (AZ), New Mexico (NM), Texas (TX)

West:

• Alaska (AK), California (CA), Colorado (CO)

• Hawaii (HI), Idaho (ID), Montana (MT)

• Nevada (NV), Oregon (OR), Utah (UT)

• Washington (WA), Wyoming (WY)

Number Format

All VoiceInfra numbers use E.164 format:

• Country code: +1 (United States)

• Format: +1NPANXXXXXX

• Example: +12135551234

Custom Number Requests

Need a number from a different country or specific area code? Contact VoiceInfra at hello@voiceinfra.ai for custom requests.

Automatic SIP Trunk Configuration

What VoiceInfra Manages for You

When you purchase a VoiceInfra number, SIP trunk configuration is handled automatically:

Inbound Trunk:

• Accepts incoming calls to your number

• Routes calls to assigned AI agents

• SIP authentication configured

• No manual setup required

Outbound Trunk:

• Enables AI agents to make outbound calls

• Caller ID configured with your number

• SIP URI and authentication set up

• Transport protocol configured

What You Can Configure

After purchase, you can modify:

• Friendly name - Give your number a memorable name (50 characters max)

• AI assistant assignment - Choose which AI handles calls

• Subscription management - View status, schedule cancellation, and reactivate

Note: SIP trunk and call routing are managed by the VoiceInfra infrastructure. This simplifies management and ensures optimal configuration for AI agents.

Post-Purchase Management

View Your Numbers

After purchase, numbers appear in your VoiceInfra dashboard with:

• Phone number - Displayed in E.164 format

• Friendly name - Your custom name for the number

• Provider - "VoiceInfra"

• Subscription status - Active, Scheduled, or Canceled

• AI agent - Assigned an assistant for call handling

Subscription Status

VoiceInfra numbers have three subscription states:

Schedule Cancellation

• Cancel anytime from the dashboard

• Number remains active until the end of the billing period

• No early termination fees

• Scheduled cancellation date shown in the dashboard

Reactivate Canceled Numbers

• Reactivate canceled numbers before the period ends

• Restore the number to active status

• Resume AI agent call handling

• No re-setup required

AI Agent Integration

Assign AI Agents to Numbers

After purchasing your number, assign an AI voice agent:

Inbound Assistant:

• Select an AI agent from the dropdown

• AI answers incoming calls automatically

• Configure agent behavior and prompts

• Test with real calls

Outbound Assistant:

• Required for outbound calling

• AI initiates calls from your number

• Configure caller ID display

• Set calling permissions

Knowledge Base Integration

Enhance your AI agents with custom knowledge:

• Upload PDFs, Word docs, text files

• AI references documents during calls

• Real-time information retrieval

• Continuous learning from new uploads

Call Management

Monitor and manage calls through the VoiceInfra dashboard:

• Call logs - View all call history

• Transcripts - Read full conversation text

• Recordings - Listen to call audio

• Analytics - Track call volume, duration, outcomes

Use Cases for VoiceInfra Phone Numbers

AI Voice Agents

24/7 Customer Service:

• AI answers calls around the clock

• Handle FAQs, scheduling, and support inquiries

• Escalate to human agents when needed

• Reduce wait times and improve satisfaction

Appointment Scheduling:

• AI handles booking and rescheduling

• Integration with calendar systems

• Automated reminders and confirmations

• Reduce no-shows with intelligent follow-ups

Lead Qualification:

• AI screens and qualifies inbound leads

• Capture contact information and intent

• Route qualified leads to the sales team

• Scale lead generation without adding staff

Business Communications

Virtual Office:

• Get local phone numbers in multiple states

• Establish presence without physical offices

• Remote team phone system

• Professional business image

Call Center:

• Multiple numbers for different departments

• AI handles high-volume call routing

• Scale up or down based on demand

• Reduce infrastructure costs

Sales Outreach:

• Outbound calling for lead generation

• Follow-up calls and nurturing

• Batch calling campaigns

• Track call outcomes and conversion

Developer Integration

API-First Approach:

• Provision numbers through the dashboard

• Manage via API for automation

• Integrate with existing workflows

• Webhook notifications for events

Testing and Development:

• Get test numbers for development

• Experiment with AI configurations

• Validate call flows before production

• Scale testing across multiple numbers

Frequently Asked Questions

How long does it take to get a phone number?

Minutes. Search, select, and purchase in 5-10 minutes. Number activates immediately after Stripe checkout completes.

Do I need any hardware or equipment?

No. VoiceInfra numbers are cloud-based. No PBX, no SIP trunk hardware, no media gateways required. Everything is managed by VoiceInfra.

Can I use VoiceInfra numbers with my existing AI agents?

Yes. Assign any VoiceInfra AI agent to your new number. Configure inbound and outbound assistants through the dashboard.

What happens if I want to cancel?

Schedule cancellation from your dashboard. Number remains active until the end of your billing period. No early termination fees.

Can I reactivate a canceled number?

Yes. Reactivate before the cancellation date takes effect. Number returns to active status with all previous configurations.

Are there any long-term contracts?

No. VoiceInfra numbers are month-to-month. Cancel anytime, no penalties or fees.

Can I get numbers from specific area codes?

Yes. Select a state, and VoiceInfra searches all area codes in that state. Contact hello@voiceinfra.ai for specific area code requests.

What countries are supported?

Currently, US only. VoiceInfra provides US phone numbers (+1 country code). Contact hello@voiceinfra.ai for international number requests.

How does billing work?

Three components:

1. Setup fee (one-time) - Charged at purchase

2. Monthly subscription - Charged monthly

3. Per-minute usage - Billed based on call duration

Is there a minimum commitment?

No minimum. Purchase one number or hundreds. Scale up or down based on your needs.

Can I transfer my VoiceInfra number to another provider?

Yes. VoiceInfra supports number portability. You can port your number to another provider if needed.

What if I need more numbers?

Order additional slots from your billing dashboard. Each slot allows you to purchase one additional number.

Getting Started

Step 1: Access Number Provisioning

1. Log in to the VoiceInfra dashboard

2. Navigate to "Phone Numbers"

3. Click "Purchase Number" or "Add Number"

Step 2: Search Available Numbers

1. Select your desired state

2. Click "Search Available Numbers"

3. Browse results (9 numbers per page)

4. Click "Load More" for additional options

Step 3: Select and Purchase

1. Click your preferred number

2. Review pricing summary

3. Add friendly name (optional)

4. Agree to the terms and conditions

5. Click "Purchase"

6. Complete Stripe checkout

Step 4: Configure Your Number

1. The number appears in the dashboard

2. Assign an AI agent for inbound calls

3. Assign an AI agent for outbound calls (optional)

4. Upload knowledge base documents

5. Test with a call

Step 5: Start Handling Calls

• AI answers incoming calls automatically

• Monitor calls through the dashboard

• Review transcripts and recordings

• Adjust AI behavior as needed

Conclusion: Key Benefits of VoiceInfra Number Provisioning

✅ AI-Ready Numbers

• Pre-configured for AI agent assignment

• No complex SIP setup required

• Knowledge base integration included

✅ Simple Purchase Process

• Search by state

• Browse available numbers

• Instant activation after purchase

✅ Transparent Pricing

• Setup fee (one-time)

• Monthly subscription

• Per-minute usage

• No hidden fees

✅ Flexible Management

• Cancel anytime

• Schedule cancellation

• Reactivate when needed

• No long-term contracts

✅ Automatic Configuration

• SIP trunks are configured automatically

• Inbound and outbound routing

• No hardware required

• Cloud-based infrastructure

Ready to purchase your AI-ready phone number?

VoiceInfra makes number provisioning simple:

✓ Search and Select

• Browse US numbers by state

• All 50 states available

• Instant availability check

✓ Instant Activation

• Purchase via Stripe checkout

• Number active immediately

• No waiting period

✓ AI-Ready

• Automatic SIP trunk configuration

• Assign AI agents directly

• Knowledge base integration

✓ Flexible Pricing

• Setup fee + monthly subscription

• Per-minute usage billing

• Cancel anytime

✓ No Contracts

• Month-to-month billing

• No early termination fees

• Scale up or down

Ready to get started?

👉 Purchase Your Number - Search available numbers now

👉 Schedule Demo - See AI agents in action

👉 View Pricing - Transparent pricing, no hidden fees