Best Phone Answering System: How to Choose the Right One

Before comparing brands, it helps to know the categories. Each type answers a different kind of call well, and you can combine more than one depending on your calls. Voicemail is the simplest option: it records a message but does not answer questions, confirm anything, or make the caller feel helped. It works best as a backup, not a primary system.

An auto attendant plays a recorded menu, such as press one for hours, press two for directions. It sorts calls but cannot hold a conversation or take detailed messages. Read our guide to the auto attendant answering system if you want a deeper look at menu-based setups.

A human answering service uses real people to answer on behalf of your business. Services like Ruby, Smith.ai, and AnswerConnect offer this, often around the clock depending on the plan. It handles nuanced conversations well, but pricing depends on the plan, included minutes or calls, and contract terms. Ruby advertised plans starting at 245 dollars per month as of October 2026, but you should verify current quotes and what each plan includes before comparing.

An AI receptionist answers calls conversationally, answers questions from your business information, takes messages, and can book appointments. AllDayDesk is an example of this type and is the product on this site.

• Voicemail: records messages only, no interaction
• Auto attendant: menus and routing, no real answers
• Human answering service: real people, strongest for nuanced calls; pricing depends on the plan and usage
• AI receptionist: conversational answers, message taking, appointment booking; pricing models vary by vendor

This comparison is based on the documented features of each category, not hands-on testing of specific vendors. AllDayDesk is our own product, so weigh that when reading its row.

On availability, voicemail and AI receptionists can take calls at any hour, while human services vary by plan and some offer 24/7 coverage at a premium. On conversations, humans handle the widest range of situations, AI receptionists handle common questions and bookings well and take a message when they do not know an answer or price, and menus and voicemail cannot converse at all.

On appointments, an AI receptionist with a built-in calendar can book new appointments directly once you have set up your services and availability, and can optionally connect to Google Calendar from Settings after you authorize your account. Human services typically take down details and pass them to you. On cost, pricing models differ by vendor: for example, Smith.ai's human receptionist service uses per-call pricing, while some AI receptionist services use flat monthly plans with included minutes and per-minute overages. Fees and coverage vary by service and plan, so compare quotes rather than assuming one category always wins.

One honest limit for AI systems: when a caller asks something the system does not know, such as a price that is not in your saved information, it takes a message instead of guessing. Changes to existing appointments are passed to you as requests, not confirmed on the spot.

• Availability: AI and voicemail run around the clock; human hours depend on the plan
• Conversation quality: humans first, AI second, menus and voicemail last
• Booking: AI can book into a dashboard calendar or optional Google Calendar; humans relay details
• Cost structure: varies by vendor; Smith.ai's human service is per call, while some AI plans are flat monthly with included minutes
• Unknown answers: AI takes a message rather than guessing

Use this framework before you sign up for anything. It works whether you end up choosing a human service, an AI receptionist, or a simple menu system. First, list your real calls. Write down the last ten calls you got and what each caller wanted. Match each call type, whether it is hours, location, pricing, booking, or a status update, to a system that can actually handle it.

Second, define a good outcome per call type. A new customer asking for a quote might need a booked appointment. A returning customer might just need a callback. If a system cannot produce that outcome, it is not the best choice for that call no matter the price.

Third, check number compatibility. Many systems let you keep your existing number by forwarding calls to the service, and the exact steps depend on your phone carrier. For example, Verizon mobile uses *72 plus the destination for all-call forwarding and *73 to turn it off, while T-Mobile uses **21*1 plus the destination and # for unconditional forwarding. Some products, like Google Voice, do not support forwarding to an automated system, so verify before committing.

Fourth, compare total cost, not the headline price. Ask what is included, what overage minutes or calls cost, and whether there are contracts or setup fees. Fifth, test with your own scenarios. Call the sample or trial with the questions your customers actually ask and see how it handles them.

• List your last ten calls and what each caller wanted
• Define the outcome you want for each call type
• Verify your carrier supports forwarding your number to the service
• Compare included minutes or calls plus overage rates, not just the base price
• Test with real customer questions before committing

AllDayDesk is an AI receptionist that answers business calls around the clock using information you save about your business. Setup starts by choosing your business or entering its website, checking the details it pulled, hearing a personalized sample call, and then choosing how to connect your phone. You keep your existing number by forwarding calls to it, with instructions that depend on your phone service.

Once running, you can see calls, transcripts, summaries, and bookings in the dashboard. New appointments go into the built-in dashboard calendar by default once you have configured your services and availability, and an optional Google Calendar connection is available in Settings after you connect and authorize your account.

If a caller asks something the system does not know, such as a price you have not saved, it takes a message instead of making one up. You can also configure call transfers to yourself with your own destination and rules, though pickup is not guaranteed. If you want to hear how it sounds before deciding, you can hear a sample built from your own business details.

• Answers calls around the clock using your saved business information
• Keeps your existing number through call forwarding
• Shows calls, transcripts, summaries, and bookings in the dashboard
• Books new appointments into the dashboard calendar, with optional Google Calendar in Settings
• Takes a message when an answer or price is unknown