Business Phone with Auto Attendant: How to Choose and Set One Up

An auto attendant is the automated voice that greets callers before a person does. A basic version plays a greeting and a menu: for example, press 1 for directions, press 2 for hours, press 3 to leave a message. A more capable one can answer common questions, take messages, and book appointments on a calendar.

The important distinction is what happens at the end of the call. Menu-only attendants usually end in voicemail, which means the caller writes down their number and hopes for a callback. Attendants connected to an answering service or an AI receptionist can collect the caller's details and, where configured, schedule work. Knowing which of those you need shapes every other decision.

• Greets callers with your business name and a short menu
• Routes calls to departments, extensions, or an outside number
• Records messages when no one is available
• Some services can also answer questions and book appointments

Most small businesses choose between three approaches. Each has trade-offs in cost, coverage, and what the caller experiences.

A hosted VoIP phone system includes an auto attendant as a feature of the service. You get menus and extensions, and calls ring phones you control. Coverage depends on someone being available to pick up.

An answering service adds people or automation who answer when you forward calls to them. Human services vary in hours and price by plan; for example, Ruby advertises live virtual receptionist plans starting at $245 per month as of October 2026, but you should verify included minutes, overage rates, and contract terms on a current quote before comparing.

An AI receptionist answers with a voice that can use your saved business details to respond and book. AllDayDesk, this site's own product, works this way: it answers around the clock using your business information, and you hear a personalized sample before you commit to anything.

• Hosted VoIP: menus and extensions, but calls still need someone to answer
• Human answering service: people handle calls; hours and pricing vary by plan
• AI receptionist: automated answers and booking using your saved business details
• Hybrid setups combine a menu with forwarding to a service after hours

Feature lists can look similar across providers, so focus on the details that change the caller's experience and your workload.

Ask each provider these questions and write down the answers so you can compare side by side.

• What happens when the attendant cannot answer a question — voicemail, a message, or a transfer?
• Can it book appointments, and into which calendar? AllDayDesk uses its built-in dashboard calendar by default once you set up services and availability, with an optional Google Calendar connection you authorize in Settings.
• Can you see what happened on each call? AllDayDesk shows calls, transcripts, summaries, and bookings in the dashboard.
• How do changes to existing appointments work? In AllDayDesk they are requests for you to approve, not confirmed changes.
• Can calls be transferred to you, and under what rules? Transfers require you to configure a destination and rules, and neither pickup nor an immediate response is guaranteed.
• What does the plan cost, what minutes are included, and what do extra minutes run?

You do not need a new phone number. Most services, including AllDayDesk, let you keep your public number by forwarding calls to the service. The exact forwarding steps depend on your phone carrier, so identify your exact product first — a carrier's wireless codes often differ from its business landline codes.

With AllDayDesk, setup starts by choosing your business or entering its website, checking the details it pulled in, hearing a personalized sample call, and then choosing your phone setup. The sample is a demonstration and creates no real booking. After that, calls, transcripts, summaries, and bookings appear in your dashboard.

Carrier examples, verified from their own guides: Verizon mobile uses *72 plus the 10-digit destination for all-call forwarding and *73 to disable, while unanswered calls use *71; Verizon business landline uses *72 and *73 for all-call forwarding. T-Mobile uses **21*1 plus the destination and # for unconditional forwarding, with ##21# to disable. AT&T Phone for Business uses *72, destination, # for all calls, *92 for no-answer, and *90 for busy, each with its own disable code. Comcast Business features like forwarding are managed through My Account or the Comcast Business App and depend on your subscribed services. Spectrum Business Voice forwarding is set in the online portal under Voice Settings or Forwarding Manager, where you choose all calls or busy/no-answer and set the destination.

One important limit: Google Voice explicitly does not support forwarding calls from a Google Voice number to an automated system, so that path will not work with an attendant service.

• Keep your existing number by forwarding calls to the service
• Confirm your carrier's exact product before using any star code
• Test forwarding with a real outside call before relying on it
• Google Voice numbers cannot be forwarded to automated systems

Work through these questions in order to land on the right type of system for your business.

• Do callers mostly need simple information (hours, address, directions)? A menu-only attendant may be enough.
• Do callers need to reach you or leave detailed messages you will act on? Forward to a service that takes messages — when an answer, price, or appointment is unknown, a good attendant takes a message rather than guessing.
• Do callers need to book appointments? Choose a service that books into a calendar you control, and set up your services and availability first.
• Do you need coverage outside your working hours? Check each option's actual availability rather than assuming any system guarantees every call connects.
• What is your budget, including overage minutes? Compare included minutes and per-minute rates, not just the base price.