Overflow Call Handling Service

Overflow is different from full-time answering. With overflow coverage, your main line stays your main line. You answer calls when you can, and only the ones you can't get to — busy signals and rings that go unanswered — get passed along. This is usually done with a feature called conditional call forwarding, sometimes labeled busy/no-answer forwarding.

The alternative is unconditional forwarding, which sends every call to the service all the time. That's a better fit when you never want to answer your own phone. Overflow is the right model when you mostly answer your own phone and just want a backup for the moments you can't.

• Busy forwarding: activates when you're already on another call
• No-answer forwarding: activates after your phone rings a set number of times without pickup
• Unreachable forwarding: activates when your phone is off or out of service
• Unconditional forwarding: sends all calls, used for full-time answering instead of overflow

You keep your public phone number. The work happens in your phone service's settings, where you enable forwarding for busy or unanswered calls and enter your AllDayDesk number as the destination. The exact steps depend on who provides your phone service, and some services don't support conditional forwarding at all — in that case your options are all-call forwarding or checking with your provider about feature availability.

A few verified examples of how carriers handle this: T-Mobile uses **67*1 followed by the destination and # for busy calls, and **61*1 plus destination # for no-answer calls. Verizon mobile uses *71 plus the destination for unanswered calls. AT&T Phone for Business uses *92 for no-answer and *90 for busy. Spectrum Business Voice manages busy/no-answer forwarding through its online Voice Settings rather than star codes. Always confirm the exact product name on your account first — carriers often use different codes for wireless, landline, and hosted business products.

• Identify your exact phone service before looking up instructions — codes differ between a carrier's wireless, landline, and business VoIP products
• Test the setup by having someone call your line while you're on another call, and again after letting it ring out
• Note that forwarding applies to calls only, not texts, on services like Verizon mobile
• If your provider doesn't offer conditional forwarding, ask them what forwarding options your plan includes

When a call reaches AllDayDesk, the AI receptionist answers using the business information you saved during setup. It can answer questions about your services, take a message, and book new appointments. New bookings go to the built-in AllDayDesk dashboard calendar by default, once you've configured your services and availability. If you prefer, you can connect Google Calendar in Settings after authorizing your account — that connection is optional.

When the caller asks something the receptionist doesn't have an answer for — an unknown price, a question about an existing appointment, anything outside your saved details — it takes a message instead of guessing. Changes to existing appointments are passed to you as requests, not confirmed changes, so you stay in control of your schedule. You can see calls, transcripts, summaries, and bookings in your dashboard.

One important limit: if you configure call transfers to reach you directly, you'll need to set up a destination and rules for when transfers happen. A transfer isn't guaranteed to connect — the caller may reach your voicemail or no one at all, so configure transfer rules with that in mind.

• Calls, transcripts, summaries, and bookings all appear in your dashboard
• New appointments use the dashboard calendar by default; Google Calendar is an optional connection in Settings
• Unknown answers, prices, or appointment questions become messages for you
• Existing appointment changes are requests for you to approve, not automatic changes

The right choice depends on how often you actually answer your own phone. If you're at a desk most of the day and pick up regularly, overflow coverage means you only pay for the calls you would have missed. If you're rarely able to answer — you're on job sites, in appointments, or working solo — unconditional forwarding to a service may serve you better than a backup that rarely triggers.

Cost is another factor. AllDayDesk plans include a set number of minutes per month, with a per-minute rate for extra usage, so overflow usage tends to be lower and more predictable than full-time answering. Human answering services exist as well; their pricing and coverage vary by provider and plan, so compare current quotes directly. Our comparison guide walks through AI versus human receptionists in more detail, including what each does beyond phone answering.

• Mostly answer your own phone? Overflow fits — you only route the calls you can't take
• Rarely able to answer? Consider unconditional forwarding for full-time coverage
• Compare included minutes and overage rates when weighing plans
• Human services and AI services differ in scope, hours, and cost — compare quotes directly

Setup starts by choosing your business or entering its website. AllDayDesk checks the details it finds, you confirm they're accurate, and you hear a personalized sample of how the receptionist would sound for your business. The sample is a demonstration — it doesn't create a real booking. Then you choose your phone setup and follow your carrier's forwarding instructions to route busy and unanswered calls.

Because forwarding is the one step that depends on your phone service, plan for it: confirm your service supports conditional forwarding, note the right codes or portal steps for your exact product, and test both the busy path and the no-answer path before relying on it.

• Choose your business or enter its website to begin
• Review and confirm the business details AllDayDesk finds
• Listen to a personalized sample call
• Choose phone setup and enable conditional forwarding with your carrier