Glossary
AI receptionists & phone automation, explained
Plain-English definitions of the terms behind modern small-business call handling — what they mean, how they work, and how they fit together.
24/7 call answering
24/7 call answering means every call to a business is answered at any hour — day, night, weekends, and holidays. It's achieved with round-the-clock staffing, an answering service, or an AI receptionist that's always available.
after-hours answering service
An after-hours answering service handles calls that come in outside business hours — evenings, weekends, and holidays. It answers, captures the caller's need, books or schedules where possible, and flags anything urgent so nothing waits until the next morning.
AI receptionist
An AI receptionist is software that answers a business's phone calls with a natural-sounding voice, understands what the caller needs, and handles it — answering questions, booking appointments, taking messages, or routing the call — without a human picking up. It runs 24/7 and can handle many calls at once.
answering service
An answering service handles incoming calls on a business's behalf — answering, taking messages, and relaying them to the team. Traditionally staffed by remote agents and billed per minute, answering services are increasingly automated with voice AI.
call overflow handling
Call overflow handling catches calls that can't be answered because the line is busy or staff are occupied. Overflow calls are routed to a backup — an answering service, a voicemail-to-text system, or an AI receptionist — so callers reach a response instead of a busy signal.
IVR (interactive voice response)
IVR, or interactive voice response, is the automated phone menu that asks callers to press a number or say a word to route their call ("Press 1 for sales"). It's the traditional way businesses direct calls without a live operator.
missed-call text-back
Missed-call text-back automatically sends an SMS to a caller the moment their call goes unanswered. The text acknowledges the missed call and offers a next step — a booking link or a reply prompt — so the lead isn't lost while the business is still top of mind.
speech-to-text
Speech-to-text (STT), also called speech recognition, converts spoken audio into written text. It's the first step in a voice AI system: turning what a caller says into text a language model can understand.
speed to lead
Speed to lead is how fast a business responds to a new inquiry — a call, form, or message. The faster the response, the more likely the lead converts, because interest fades quickly and prospects often contact several businesses at once.
text-to-speech
Text-to-speech (TTS) converts written text into spoken audio with a synthetic voice. In a voice AI system, it's the final step: turning the assistant's chosen response into natural-sounding speech the caller hears.
virtual receptionist
A virtual receptionist answers and handles a business's calls remotely instead of from the front desk. It can be a live remote agent, an AI voice assistant, or a mix — greeting callers, scheduling, taking messages, and routing calls.
voice AI agent
A voice AI agent is software that holds a spoken, back-and-forth conversation in real time. It listens, understands intent with a language model, and replies in a natural voice — and can take actions like booking, transferring, or sending a text mid-conversation.