ExtenVox
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Quick Setup & Operating Playbooks

How do you want ExtenVox to work for you today?

Pick the situation you are in right now. In 30 to 60 seconds, you can have your phone routing calls to your AI receptionist with zero headache and zero tech jargon.

Enter your ExtenVox Phone Number to personalize all dial codes:
Strategy 1 During the Day Most Popular 30 seconds

Hands-on with Tools / Up on a Ladder

When your hands are busy, dirty, or you cannot stop mid-job to answer.

1

What It Is & How It Works

Your phone rings normally. If you cannot answer after 3 or 4 rings (or tap Decline because you are working), the call automatically forwards to your ExtenVox AI assistant so you never lose a paying customer.

1
Customer Calls Customer dials your normal cell phone or business line.
2
Phone Rings 3x You hear it, but you are busy on a roof, under a sink, or driving.
3
ExtenVox Answers AI greets the caller professionally in your company voice.
4
Collects Job Info Gathers customer name, service address, problem, and urgency.
5
Instant SMS to You You receive a neat text message summary ready for follow-up.
2

Real-Life Scenario

A homeowner calls with a burst pipe emergency. You are in an attic running electrical conduit and cannot grab your phone. Instead of sending the customer to an empty voicemail where 80% hang up, ExtenVox answers immediately, collects their address and urgency, and texts you: "John needs emergency electrical repair at 44 Pine Rd. Water near panel."

Best suited for:

  • Electricians, plumbers, HVAC techs, and carpenters with tools in hand
  • Solo contractors who are driving between job sites
  • In-person meetings when you cannot answer another phone in front of a client
3

How to Configure & Activate

Select your mobile carrier:

Dial *71 followed by your 10-digit ExtenVox number and tap Call. Wait for 2 confirmation beeps.

Activation Dial Code:
Tap to Dial
How to turn off / revert back to normal:
*73 Dial *73 and tap Call.

Dial **004*1[10-Digit-Number]# and tap Call.

Activation Dial Code:
Tap to Dial
How to turn off / revert back to normal:
##004# Dial ##004# and tap Call.

Dial **004*1[10-Digit-Number]# and tap Call. (Or **61*1[Number]# for unanswered calls).

Activation Dial Code:
Tap to Dial

Custom ring time tip: **61*1[Number]**20# (adjust ring time to 20s)

How to turn off / revert back to normal:
##004# Dial ##004# (or ##61#) and tap Call.

Go to Phone app > Settings > Supplementary Services / Call Forwarding > Forward when unanswered > Enter your ExtenVox number.

How to turn off / revert back to normal:
Turn off toggle in Phone Settings. Dial Turn off toggle in Phone Settings. and tap Call.

In your ExtenVox Dashboard:

  1. Log in to ExtenVox and go to Assistants > Behavior.
  2. Select Daytime / Field Work mode.
  3. Enable required questions: "What is your service address?" and "What is the best time for a callback?".
  4. Check Notifications to make sure your personal cell receives instant SMS alerts.
Strategy 2 Nights & Weekends Peace of Mind 1 minute

After-Hours & Overnight Guard

Sleep peacefully and enjoy family weekends while your AI handles night calls.

1

What It Is & How It Works

You answer during normal work hours. After 6 PM or on weekends, your phone automatically turns on Do Not Disturb. Your carrier recognizes your phone as "busy" and instantly forwards the caller to ExtenVox without your phone making a sound.

1
Night Call at 10 PM Customer calls while you are asleep or at dinner.
2
Phone Stays Silent Do Not Disturb blocks the ring silently on your phone.
3
Carrier Directs to AI Carrier sees line as busy and routes immediately to ExtenVox.
4
Screens for Emergency AI asks if this is an urgent situation or can wait for morning.
5
Smart Escalation Urgent? Alerts on-call tech. Routine? Ready in your morning inbox.
2

Real-Life Scenario

A client calls at 11:30 PM on a Saturday asking for a price quote for a patio job. ExtenVox answers politely, records the project details, and lets them know the estimating team will follow up Monday morning. If someone calls with a flooding emergency, ExtenVox triggers an urgent phone transfer to your on-call number.

Best suited for:

  • 24/7 service businesses (HVAC, plumbing, restoration, towing, locksmiths)
  • Business owners wanting zero night disturbances without losing emergency jobs
  • Firms providing 24/7 client support without hiring a night shift team
3

How to Configure & Activate

Select your mobile carrier:

Dial *71 followed by your 10-digit ExtenVox number and tap Call.

Activation Dial Code:
Tap to Dial
How to turn off / revert back to normal:
*73 Dial *73 and tap Call.

Dial **004*1[10-Digit-Number]# and tap Call.

Activation Dial Code:
Tap to Dial
How to turn off / revert back to normal:
##004# Dial ##004# and tap Call.

Dial **004*1[10-Digit-Number]# and tap Call.

Activation Dial Code:
Tap to Dial
How to turn off / revert back to normal:
##004# Dial ##004# and tap Call.

Do Not Disturb & Focus Synchronization

iPhone (Apple iOS Focus)

  1. Open Settings > Focus > Do Not Disturb.
  2. Under "Set a Schedule", tap "Add Schedule" > Time.
  3. Set your off-hours (e.g. 7:00 PM to 7:00 AM, Monday through Friday, plus all day Saturday & Sunday).
  4. In "People", add your family and VIPs to Allowed Notifications so their calls always ring.
  5. Leave "Allow Repeated Calls" off so unknown numbers route directly to ExtenVox.

Android (Samsung / Google Pixel / Motorola)

  1. Open Settings > Sound & Vibration > Do Not Disturb.
  2. Tap "Schedules" > "Add More" and name it "ExtenVox Off-Hours".
  3. Set your resting days and hours (e.g., 7 PM to 7 AM every day).
  4. Under "Who can interrupt", choose "Starred / Favorite Contacts Only".
  5. All non-favorite calls are silenced and instantly transferred to ExtenVox.

In your ExtenVox Dashboard:

  1. In ExtenVox, go to Operating Hours and set your normal business hours.
  2. Under After-Hours Behavior, define what qualifies as an emergency (e.g., active water leak, no heat in winter).
  3. Set your emergency on-call transfer number.
Strategy 3 Privacy & Security Zero Spam 20 seconds

Spam Shield & Total Screening

Block 100% of robocalls, scammers, and telemarketers before your phone even rings.

1

What It Is & How It Works

Every single incoming call to your cell number is forwarded straight to ExtenVox. The AI acts as your personal executive gatekeeper: robocalls and spammers hang up immediately, while genuine clients are asked who they are and what they need.

1
Robocall or Lead Dials Call arrives at your public phone number.
2
Direct to AI (No Ring) Unconditional forward routes call to ExtenVox in 0.1s.
3
AI Gatekeeper Screens AI asks: "Who is calling and which company are you with?"
4
Robocalls Terminated Spam bots fail interactive check and disconnect.
5
Qualified Leads Delivered Real customer summaries delivered directly to your SMS or CRM.
2

Real-Life Scenario

Your phone number is published on your work truck, Google Business Profile, and local fliers. You get 40 telemarketing calls a day about commercial loans and car warranties. With Spam Shield, your phone stays 100% quiet. You only receive notifications for real customers requesting actual work.

Best suited for:

  • Contractors with phone numbers printed on vehicles, lawn signs, and Google
  • Real estate agents and executives swamped with cold sales calls
  • Anyone exhausted by spam calls disrupting their workday focus
3

How to Configure & Activate

Select your mobile carrier:

Dial *72 followed by your 10-digit ExtenVox number and tap Call.

Activation Dial Code:
Tap to Dial
How to turn off / revert back to normal:
*73 Dial *73 and tap Call.

Dial **21*1[10-Digit-Number]# and tap Call.

Activation Dial Code:
Tap to Dial
How to turn off / revert back to normal:
##21# Dial ##21# and tap Call.

Dial **21*1[10-Digit-Number]# and tap Call.

Activation Dial Code:
Tap to Dial
How to turn off / revert back to normal:
##21# Dial ##21# and tap Call.

In your ExtenVox Dashboard:

  1. Go to Assistants > Voice & Persona.
  2. Enable "Screening & Verification" mode.
  3. Set the AI to politely ask: "May I ask who is calling and the reason for your call?".
  4. Configure instant SMS notifications with transcript excerpts.
Strategy 4 Business Growth 100% Cloud Instant

Direct Cloud Business Number (No Forwarding)

A clean, dedicated 24/7 business line in the cloud with zero phone forwarding tricks.

1

What It Is & How It Works

You get a dedicated local or toll-free number directly from ExtenVox (or port your existing company number to us). The AI answers 100% of calls directly in the cloud. No cell carrier codes, no battery drain, and unlimited simultaneous callers.

1
Customer Calls Business Dials your official ExtenVox business line.
2
Cloud Answers Instantly AI answers in under 1 second (never busy, handles 50 calls at once).
3
Answers FAQs & Quotes Provides business hours, services, and intake details.
4
Books Appointments Schedules visits directly onto your connected calendar.
5
Live Transfer to Staff Transfers to your team only when human assistance is needed.
2

Real-Life Scenario

You start a new remodeling business and want to keep your personal cell private. You put your ExtenVox cloud number on your website and business cards. Even if 5 customers call at the exact same second, all 5 get answered immediately without any waiting on hold.

Best suited for:

  • New businesses wanting a dedicated professional phone identity
  • Companies replacing outdated landlines or expensive phone hardware
  • Service businesses experiencing surges where multiple lines ring at once
3

How to Configure & Activate

Select your mobile carrier:

No mobile carrier setup required! Publish your ExtenVox number directly.

💡

Want to keep your current business number? You can request number porting through ExtenVox Technical Support.

⚙️

Need help porting your existing number?

Our telecom engineering team will configure the SIP peering, codecs, or porting paperwork directly for you.

Request Number Porting via Support

In your ExtenVox Dashboard:

  1. Your dedicated ExtenVox number is active in your dashboard immediately.
  2. Customize your greeting message and company name in Assistants > General.
  3. Connect your Google Calendar or Outlook Calendar in Settings > Calendars.
  4. Add your team members in Call Routing for live transfers.
Strategy 5 Business Growth High ROI 1 minute

Ad Campaigns & Paid Traffic Line

Turn Google Ads and Facebook Ads clicks into instant booked jobs.

1

What It Is & How It Works

Use a dedicated phone number exclusively for your paid advertising campaigns (Google Ads, Facebook Ads, flyers, billboards). The AI answers with a laser-focused script tailored to your specific promotion, scores the lead, and books consultations on the spot.

1
Prospect Clicks Ad Sees your "20% Off Spring AC Tune-up" promotion.
2
Calls Campaign Line Dials the dedicated promo phone number.
3
AI Welcomes with Promo AI says: "Thanks for calling about our Spring Tune-up special!"
4
Lead Qualification Verifies property type, system age, and readiness to buy.
5
Calendar Booking + CRM Books the appointment and fires a webhook to your CRM.
2

Real-Life Scenario

You spend $1,500/month on Google Ads. When prospects call, they want an immediate answer. Instead of risking a missed call, ExtenVox answers instantly, mentions the exact Google promo they saw, qualifies their budget, and puts the estimate appointment straight into your calendar.

Best suited for:

  • Service businesses investing in Google Ads, Meta Ads, or direct mail
  • Real estate launches, roofing storm promotions, and seasonal specials
  • Agencies managing lead generation for contractor clients
3

How to Configure & Activate

Select your mobile carrier:

No mobile codes needed. Place this dedicated virtual number on your landing page and ads.

In your ExtenVox Dashboard:

  1. Assign your campaign phone number in ExtenVox dashboard.
  2. In Assistants > Prompts, add campaign details: "Mention our $89 drain clearing promo".
  3. Connect your calendar so the AI can book slots directly.
  4. Enable Webhooks to automatically send leads to HubSpot, Zapier, or Pipedrive.
Strategy 6 Privacy & Security Direct Access 1 minute

VIP Whitelist & Family Bypass

Important clients, family, and key partners bypass the AI and reach you immediately.

1

What It Is & How It Works

When your spouse, your biggest general contractor, or a high-value account calls, ExtenVox checks their caller ID against your Whitelist. Instead of hearing an AI voice, the call instantly bypasses the AI and rings directly on your personal phone.

1
Incoming Call Phone rings from an incoming number.
2
Instant ID Check System checks phone number against VIP Whitelist.
3A
VIP Match? Bypass! Rings directly on your phone, skipping AI completely.
3B
Unknown Caller? ExtenVox AI answers and screens as usual.
4
VIP Voicemail Fallback If you miss the VIP call, AI returns with a personalized greeting.
2

Real-Life Scenario

You work with a commercial builder who gives you $200k of work a year. Whenever the project manager calls from his cell, the call never goes to AI—it rings straight through to you. If a random sub-tier vendor calls, ExtenVox takes a message.

Best suited for:

  • Contractors with key general contractors and preferred accounts
  • Executives and business owners with family members calling work lines
  • High-end custom builders where VIP clients expect direct cell access
3

How to Configure & Activate

Select your mobile carrier:

Add your VIP contacts to your phone’s "Favorites" list so they also ring through Do Not Disturb.

In your ExtenVox Dashboard:

  1. Go to ExtenVox Dashboard > Contacts > VIP Whitelist.
  2. Add VIP phone numbers and names.
  3. Set Action to "Bypass AI & Direct Transfer to Owner".
  4. Set VIP Fallback Greeting: "Welcome back! [Owner] is currently assisting another team member, let me take an immediate priority note for you."
Strategy 7 Business Growth Multi-Region 2 minutes

Local Presence & Regional Routing

Detect caller area code, adapt local dialect, and route to local branch teams.

1

What It Is & How It Works

ExtenVox checks the caller’s area code (or dialed line). It automatically adjusts its greeting, local city references, and language (English, Spanish, or Portuguese), and can transfer the caller to the specific local field technician for that city.

1
Caller Dials In Customer calls from Dallas (area code 214) or Miami (area code 305).
2
Area Code Detected System recognizes the regional location in milliseconds.
3
Adapts Tone & Language Uses local city knowledge or preferred regional language.
4
Local Branch Transfer Transfers emergency service directly to the Dallas or Miami team.
2

Real-Life Scenario

You operate across both Connecticut and Westchester, NY. When a customer from a 203 area code calls, ExtenVox greets them referencing local Connecticut coverage. When a 914 area code calls, it coordinates with your New York dispatch branch.

Best suited for:

  • Multi-location service franchises and regional contractors
  • Businesses serving bilingual communities (English / Spanish / Portuguese)
  • Companies wanting centralized phone handling with a local community feel
3

How to Configure & Activate

Select your mobile carrier:

Operates automatically in the cloud based on caller ID. No cell phone changes needed.

In your ExtenVox Dashboard:

  1. Go to Call Routing > Regional & Area Codes.
  2. Map area codes to specific dispatch numbers or regional AI personas.
  3. Set language preferences for specific regional markets.
Strategy 8 During the Day Human First 30 seconds

Safety Net: Human First, AI as Backup

Answer your own phone when you can. Let AI catch calls when you are busy.

1

What It Is & How It Works

You love answering your own phone when available. With Safety Net, your phone rings for 15 to 20 seconds. If you pick up, you speak directly. If you are busy with a client or cannot reach your phone in time, ExtenVox smoothly answers before the customer gives up.

1
Customer Calls Call arrives at your phone.
2
You Get First Chance Your phone rings for 15 to 20 seconds.
3
You Answer? Great! You speak directly with your customer as normal.
4
Busy or in Meeting? ExtenVox steps in seamlessly after timeout.
5
Zero Lost Revenue Customer never hears voicemail and job details are saved.
2

Real-Life Scenario

You are at a supply counter paying for parts when your phone rings. You let it ring. Instead of losing a new kitchen remodel lead to voicemail, ExtenVox answers on the 4th ring: "Thanks for calling Acme Remodeling! Our team is currently with a client, how can I help you today?"

Best suited for:

  • Solo operators who prefer speaking directly with callers whenever possible
  • Small office teams that experience temporary surges during lunch or meetings
  • Anyone who wants the personal touch backed by an infallible safety net
3

How to Configure & Activate

Select your mobile carrier:

Dial *71 followed by your 10-digit ExtenVox number and tap Call.

Activation Dial Code:
Tap to Dial
How to turn off / revert back to normal:
*73 Dial *73 and tap Call.

Dial **61*1[10-Digit-Number]# and tap Call.

Activation Dial Code:
Tap to Dial
How to turn off / revert back to normal:
##61# Dial ##61# and tap Call.

Dial **61*1[10-Digit-Number]**20# (the 20 sets a 20-second delay) and tap Call.

Activation Dial Code:
Tap to Dial
How to turn off / revert back to normal:
##61# Dial ##61# and tap Call.

In your ExtenVox Dashboard:

  1. In Assistants > Greeting, set a friendly backup greeting: "Thanks for calling [Company], our staff is currently assisting another client. How can I help you right now?".
  2. Enable instant text summaries so you can call back right after your meeting.
Strategy 9 Nights & Weekends Team Roster 2 minutes

On-Call Rotation & Shift Manager

Route emergency calls automatically to whichever technician is on duty tonight.

1

What It Is & How It Works

ExtenVox syncs with your team schedule (via Google Calendar or Outlook). When an after-hours emergency occurs, the AI screens the caller for true urgency and transfers the call directly to the specific technician on duty that night.

1
Emergency at 2 AM Customer calls reporting no heat in freezing temperatures.
2
AI Triage & Urgency AI verifies safety and confirms emergency status.
3
Checks Schedule ExtenVox checks team Google Calendar for "Tuesday On-Call Tech".
4
Direct Tech Transfer Transfers the live call directly to Mike’s cell phone.
5
Off-Duty Techs Rest The rest of your team sleeps with zero interruptions.
2

Real-Life Scenario

Your plumbing company has 4 technicians taking turns on weekend duty. You put the rotation on a shared Google Calendar. ExtenVox automatically routes Saturday night emergency calls to Sarah, and Sunday night calls to Dave. Routine inquiries are scheduled for Monday.

Best suited for:

  • HVAC, plumbing, restoration, and electrical companies with rotating shifts
  • Veterinary emergency clinics, property maintenance, and IT support teams
  • Companies wanting fair, automated on-call distribution without manual forwarding
3

How to Configure & Activate

Select your mobile carrier:

The technician on duty simply keeps their phone on and allows calls from your ExtenVox number.

In your ExtenVox Dashboard:

  1. Go to Settings > Calendar Integrations and connect your shared Google or Outlook Calendar.
  2. Under Call Routing > On-Call Dispatch, map calendar events to technician phone numbers.
  3. Set emergency triage keywords (e.g., leak, smoke, no power, urgent).
Strategy 10 Business Growth Multi-Business 2 minutes

Multi-Brand & Multi-Business Hub

One single ExtenVox account answering multiple separate businesses or trade brands.

1

What It Is & How It Works

Run multiple businesses or DBAs from one central hub. When Line 1 rings, ExtenVox answers as "ABC Plumbing". When Line 2 rings, it answers as "XYZ Kitchen & Bath"—with separate pricing, services, and calendars, all managed in one dashboard.

1
Line 1: ABC Plumbing Customer calls plumbing number → AI answers as ABC Plumbing.
2
Line 2: XYZ Roofing Customer calls roofing number → AI answers as XYZ Roofing.
3
Custom Knowledge Base Each line has its own pricing, hours, and booking rules.
4
Unified Dashboard All call recordings, transcripts, and leads in one master login.
2

Real-Life Scenario

You own a general contracting business and a separate rental cleaning company. Rather than paying for multiple phone services or carrying two phones, ExtenVox answers both lines with their respective company names, scripts, and appointment calendars.

Best suited for:

  • Entrepreneurs running multiple trade businesses or DBAs
  • Holding companies, shared accounting offices, and franchise operators
  • Contractors maintaining separate residential and commercial brand lines
3

How to Configure & Activate

Select your mobile carrier:

Forward each carrier line to its respective ExtenVox virtual number, or use direct cloud numbers.

In your ExtenVox Dashboard:

  1. In ExtenVox Dashboard, create separate Assistant profiles for each company.
  2. Assign a dedicated phone number to each assistant profile.
  3. Customize each profile’s company name, service catalog, and calendar.
Strategy 11 Business Growth Enterprise Ready Guided by Support

AI Module for Existing Office Phone Systems (PBX / SIP)

Add natural AI power to your existing desk phones and central system (3CX, FreePBX, Asterisk, Cisco).

1

What It Is & How It Works

Already invested in an office phone system with desk phones, extensions, and hardware? You can connect ExtenVox via SIP Trunking. The AI works as your intelligent conversational IVR, overflow queue, or after-hours receptionist without replacing any existing office equipment.

1
Office PBX System Your existing Asterisk, FreePBX, 3CX, Cisco, or Avaya system.
2
SIP Interconnection Low-latency SIP trunk connection to ExtenVox Cloud.
3
AI Conversational IVR AI understands natural speech instead of "press 1 for sales".
4
Transfers to Extensions Transfers qualified calls back to physical desk extensions (101, 102).
2

Real-Life Scenario

A busy commercial contracting office with 15 desk phones experiences peak phone volume. Instead of callers waiting on hold or navigating confusing keypad menus, ExtenVox greets them naturally, answers common questions, and transfers to the correct extension.

Best suited for:

  • Offices with existing phone systems (FreePBX, Asterisk, 3CX, Cisco, Avaya)
  • Multi-desk operations wanting AI assistance without discarding existing phones
  • Companies needing an intelligent conversational front-end for inbound calls
3

How to Configure & Activate

Select your mobile carrier:

SIP RFC 3261 protocol with G.711u/a or Opus high-fidelity audio codecs.

⚙️

Request SIP Trunking Setup with Our Engineering Team

Our telecom engineering team will configure the SIP peering, codecs, or porting paperwork directly for you.

Request SIP Configuration via Support

In your ExtenVox Dashboard:

  1. Contact ExtenVox technical support with your PBX IP/FQDN details.
  2. Our team will provision your SIP trunk credentials and low-latency route.
  3. Configure an outbound route in your PBX dialplan to send calls to ExtenVox.
Quality Assurance

5-Step 60-Second Setup Verification Checklist

After configuring your phone, perform this quick 5-step test to ensure 100% flawless operation before your next customer calls.

1

Direct Number Validation

Call your ExtenVox virtual number directly from any phone. Confirm the AI answers immediately with your approved greeting.

2

Carrier Code Confirmation

Dial your carrier's forwarding code and verify the confirmation tone or carrier success message on screen.

3

Decline / Busy Test

Have a friend or secondary phone call your cell. Tap Decline / Reject. Confirm ExtenVox answers in under 3 seconds.

4

Ring Timeout Test

Call your cell and let it ring without answering. Ensure the call seamlessly forwards to ExtenVox after 3-4 rings.

5

Do Not Disturb / Night Test

Enable Focus / Do Not Disturb on your smartphone. Call your cell—it should stay completely silent while ExtenVox handles the call and sends you an SMS summary.

Common Carrier Tips & Troubleshooting

⚠️ "Connection problem or invalid MMI code" error?

Turn off Wi-Fi and Wi-Fi Calling in your phone settings temporarily. Re-dial the carrier code while connected directly to the cellular 4G/5G mobile network.

🌍 Number Format Requirements

Always include the country code when dialing codes. In the United States, use 1 + Area Code + Phone Number (e.g. 12035550123).

🔄 Avoiding Infinite Call Loops

Never forward your ExtenVox virtual number back to your personal cell phone without supervised call routing configured in your dashboard.

🤝 Need Custom Assistance?

If your carrier uses custom menus or corporate restrictions, contact our support team at contact@extenvox.com and we will gladly walk you through it.

Ready to never miss another customer call?

Unlimited calls on every plan. Pick the features your business needs and get your 24/7 AI Receptionist live in minutes.

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