AI phone answering for your business

Overflow Answering Service: Backup Coverage When You Can't Pick Up

An overflow answering service handles the calls your business can't get to, while you keep answering your main calls yourself. You set up conditional call forwarding on your phone line, so a call only reaches the service when your line is busy or you don't answer. When you're free, calls come to you exactly as they do now. With AllDayDesk, the overflow calls are answered by an AI receptionist that uses your saved business information, takes messages, and can book appointments. You can review every call, transcript, and summary in your dashboard.

Hear it answer for your business No credit card to try it

24/7 call answeringKeep your current numberFirst 30 calls free

How it works

Set up your business receptionist

01

Add your business

Choose your business or enter its website. Check the services, hours, and details callers need.

02

Hear your receptionist

Listen to a sample for your business and check its answers. The sample does not create a real booking.

03

Connect your phone

Follow the steps for your phone service. Set up booking availability and any call transfers you want to use.

Review calls, messages, and bookings in your dashboard.

How overflow answering works

Overflow answering is a backup plan for your phone. Instead of forwarding every call away from you, you forward only the calls that would otherwise go to voicemail or ring unanswered. Your customers who reach you directly still talk to you, which keeps the personal touch on your main line.

The switch happens through a phone feature called conditional call forwarding. Your phone company sends calls to a second number only under certain conditions: when your line is busy, or when nobody answers after a set number of rings. AllDayDesk answers those overflow calls using the business details you save during setup, takes a message when it can't answer something, and shows you the call, transcript, and summary in your dashboard.

  • You answer first: calls only reach the service when you're busy or unavailable
  • The AI receptionist greets callers with your business name and saved details
  • Simple questions get answered from your saved business information
  • Anything unknown, like a price you haven't listed, becomes a message for you
  • Appointment requests go to your calendar once you've set up services and availability
  • Every call, transcript, and summary appears in your dashboard for review

When backup-only coverage is the right choice

Overflow coverage fits owners who answer their own phone most of the time but lose calls in predictable situations: while on a job, mid-appointment, or during a rush of calls. A one-person shop on the tools all day, a salon owner with a client in the chair, or an accountant during a busy meeting all fit this pattern.

If you want calls handled at night and on weekends too, all-call forwarding gives you broader coverage, but you give up answering any calls yourself. The tradeoff is simple: overflow keeps you in control of the customer experience on your main line, while full forwarding trades that control for wider coverage. You can also change the forwarding mode later if your needs shift.

  • Choose overflow if you usually answer but miss calls during work
  • Choose all-call forwarding if you want coverage outside working hours too
  • Overflow keeps your greeting and style on the calls you take yourself
  • You can switch between modes using your phone carrier's forwarding codes
  • See how all-call forwarding differs if you want coverage outside working hours as well. 24/7 answering service

Setting up busy and no-answer forwarding

Setup has two parts: getting AllDayDesk ready, and pointing your overflow calls at it. On the AllDayDesk side, you choose your business or enter its website, check the details it pulled together, listen to a personalized sample of how your calls will sound, and choose your phone setup. The sample is a demonstration only and creates no real booking.

On the phone side, the steps depend on your carrier, and the exact codes depend on which service you have. Conditional forwarding (busy or no-answer) is a different feature from unconditional forwarding (all calls), so make sure you're using the right instructions for your product. Here are verified examples:

  • Verizon mobile: dial *71 plus the 10-digit destination to forward unanswered calls; *73 disables forwarding. Activate from the phone itself while in Verizon coverage.
  • T-Mobile: dial **61*1 followed by the destination and # for no-reply forwarding, **67*1 plus destination and # for busy, and ##61# or ##67# to disable each.
  • AT&T Phone for Business: dial *92, the destination, then # for no-answer forwarding, and *90, destination, # for busy; *93# and *91# turn them off.
  • AT&T Collaborate: *92 plus destination enables no-answer forwarding and *93 disables it; *62 plus destination enables busy forwarding and *63 disables it.
  • Comcast Managed Voice (Panasonic TPA65 guide): *92 plus destination sets no-answer forwarding, *93 disables; *90 plus destination sets busy forwarding when call waiting is off, *91 disables.
  • Spectrum Business Voice: sign in to SpectrumBusiness.net, open Voice, choose your number, then Voice Settings or Forwarding Manager, and choose busy/no-answer forwarding with your destination.
  • Verizon business landline: the published quick-start guide covers *72 all-call forwarding only; if you want conditional forwarding, confirm with Verizon what your specific service supports rather than borrowing wireless codes.
  • Google Voice: Google states that forwarding calls from a Google Voice number to an automated system is unsupported, so a Google Voice number is not a workable path to AllDayDesk.

Sources: Verizon mobile call forwarding · T-Mobile short codes · AT&T Phone for Business call forwarding · AT&T Collaborate feature access codes · Comcast Managed Voice phone guide · Spectrum Business Voice user guide · Verizon business call forwarding guide · Google Voice linked phone setup

What happens to each overflow call

When a call reaches AllDayDesk, the receptionist greets the caller, answers questions it can from your saved business details, and takes a message when it can't. If a caller asks something you haven't saved, like a price you didn't list, the receptionist takes a message instead of guessing. Appointment requests are booked on the built-in AllDayDesk calendar once you've configured your services and availability. If you prefer, you can connect Google Calendar in Settings after authorizing your account; other calendar connections aren't part of the product.

If a caller wants to reach you directly, the receptionist can transfer the call, but only after you've set up a transfer destination and rules. A transfer isn't guaranteed to connect, so treat transfers as one option among messages and bookings, not a promise.

Changes to existing appointments are passed to you as requests. The receptionist doesn't confirm reschedules or cancellations on its own; you decide and update the calendar.

  • Known questions answered from your saved business information
  • Unknown answers become messages, not guesses
  • New appointments book to your configured calendar
  • Existing appointment changes come to you as requests to approve
  • Transfers follow the destination and rules you configure
  • See how phone-based booking works with the built-in calendar and the optional Google Calendar connection. AI appointment booking

Overflow service versus voicemail

Voicemail catches the same missed calls, but it gives callers a one-way recording and leaves the work to them. An overflow service talks back: it answers common questions, captures the details of what the caller needs, and can book an appointment during the call. You get a written summary in your dashboard instead of a list of callbacks to return blind.

The cost picture is also different to think about. Voicemail is usually free with your phone plan, while an answering service charges for the minutes it handles. With overflow forwarding, you only pay for the calls that actually reach the service, which keeps the bill tied to the calls you would otherwise have missed. If you're weighing costs across options, the answering service cost guide walks through per-minute and monthly models with worked examples.

Pricing

Choose a plan that fits your calls.

Solo $99/moBusiness $199/moGrowth $349/mo

Each plan includes call minutes. Extra minutes cost more. See your estimate before you start. Your first 30 calls are free, with no credit card. Paid plans are monthly; cancel anytime.

More questions, answered

Will my regular calls still come to me?

Yes. Conditional forwarding only sends calls away when your line is busy or you don't answer. Calls you pick up normally never leave your phone.

What if my carrier isn't listed above?

Carrier steps vary by product, and not every service supports conditional forwarding. Check your carrier's own documentation for your exact service, or contact their support. If busy/no-answer forwarding isn't available, all-call forwarding is the alternative, though it sends every call to the service.

Can I use my Google Voice number with this?

No. Google states that forwarding calls from a Google Voice number to an automated system is unsupported, so Google Voice isn't a compatible forwarding source.

How do I know what the service told my callers?

Every call, transcript, and summary appears in your AllDayDesk dashboard, so you can review exactly what was said and what messages were taken.

Does the sample call book a real appointment?

No. The personalized sample you hear during setup is a demonstration only. It creates no real booking and contacts no one.

Can the receptionist reschedule an existing appointment for a caller?

It passes the change request to you instead of confirming it. You approve the change and update the calendar yourself.

Hear how your overflow calls would sound

Enter your business details, check them, and listen to a personalized sample of the receptionist answering for your business. If it sounds right, set up busy and no-answer forwarding and keep answering your main calls yourself.

Hear it answer for your business No credit card to try it

Updated . Linked sources checked on the date shown.

Explore call answering