White-Label Voice AI Glossary: Every Term Explained
The voice AI industry uses terminology borrowed from telephony, SaaS, compliance law, and machine learning, often without explaining any of it. Agencies evaluating white-label platforms encounter terms like "SIP trunk," "native platform," "TCPA," and "crews" in sales calls and documentation with the assumption that everyone already knows what they mean. This glossary defines 30 terms in plain language, organized alphabetically, with a featured section comparing AI receptionists, AI agents, and AI chatbots since those three terms cause the most confusion.
Every definition below is written for agency owners and marketers, not engineers. Where a term has different meanings in different contexts, the definition reflects how it applies to voice AI specifically. The glossary starts with a featured section on the three most confused terms (AI receptionist, AI chatbot, AI agent), then covers 25 alphabetical entries from ACMA to wrapper, each with a practical note on why the term matters for agency decisions.
AI Receptionist vs AI Chatbot vs AI Agent
These three terms describe different types of AI automation, but vendors use them interchangeably, which creates confusion when agencies try to position their services to clients.
AI Receptionist
An AI receptionist is a voice AI system that answers inbound phone calls for a business. It picks up when the business owner cannot answer, handles the conversation using a knowledge base built from the business's website and reviews, and can book appointments, qualify leads, take messages, and send SMS follow-ups. The caller experience resembles speaking with a human receptionist. AI receptionists are inbound-only and focused on phone calls, not text channels. Trillet's D2C product ($49/month, 150 minutes included) and its white-label platform both use AI receptionist technology as the core offering.
AI Chatbot
An AI chatbot is a text-based system that handles conversations through typed messages on websites, SMS, WhatsApp, or Facebook Messenger. Chatbots do not handle phone calls. They respond to written input with written output. Some platforms, like Stammer AI, started as chatbot builders and later added voice capabilities as a secondary feature. When an agency sells "AI chatbot" services, clients often expect text-based automation, not phone answering.
AI Agent
An AI agent is a broader category that includes any AI system capable of taking autonomous actions across multiple steps. An AI agent might answer a phone call, look up the caller's appointment history in a CRM, check calendar availability, book a slot, and send a confirmation SMS, all within a single interaction. Both AI receptionists and AI chatbots can be AI agents if they execute multi-step workflows autonomously. The term is architecture-neutral: it describes what the system does (takes actions), not how the user interacts with it (voice vs text).
Which Term Should Agencies Use?
For phone-based services, use "AI receptionist" or "voice agent." Clients understand "receptionist" immediately. For text-based services across web chat, SMS, or WhatsApp, use "AI chatbot." For marketing materials targeting business owners who may not know the category, "AI receptionist" converts better because it describes a role the business already has (or needs).
Alphabetical Glossary
Each term below gets a plain-language definition in 2-3 sentences, written for agency owners evaluating or reselling white-label voice AI platforms.
ACMA (Australian Communications and Media Authority)
ACMA is the Australian regulator that governs telecommunications, including AI-powered phone calls. Compliance with ACMA rules means the platform follows Australian laws around call recording consent, spam prevention, and the Do Not Call Register. Agencies serving Australian clients need a platform that includes ACMA compliance, not one that treats it as an afterthought.
Call Forwarding
Call forwarding is the mechanism that routes unanswered calls from a business's existing phone number to the AI receptionist. The business keeps its current number. When the owner does not pick up (busy, missed, or declined), the call forwards to the AI. Setup takes about 30 seconds on most carriers and requires no hardware, porting, or third-party telephony accounts.
Churn Rate
Churn rate is the percentage of clients who cancel their service in a given period, usually measured monthly. If an agency has 20 clients and loses 2 in a month, churn is 10%. For voice AI agencies, average monthly churn ranges from 5-10% in the first year, dropping to 3-5% once onboarding and reporting processes mature. High churn destroys recurring revenue faster than new sales can replace it.
Concurrent Calls
Concurrent calls refers to the number of phone calls a platform can handle at the same time. A human receptionist handles one call at a time. Most voice AI platforms handle unlimited concurrent calls because each call runs on an independent cloud instance. This matters for agencies serving businesses with high call volumes or seasonal spikes where multiple customers call simultaneously.
Crews / Orchestration
Crews (sometimes called orchestration or multi-agent orchestration) is a feature where multiple AI agents work together within a single call, handing off to each other based on context. For example, a front-desk agent qualifies the caller, then hands off to a scheduling agent that books the appointment, then hands off to a billing agent that collects payment information. Each agent maintains its own context boundaries, preventing data contamination between steps. Trillet's Crews feature enables these seamless handoffs with context isolation.
CSAT (Customer Satisfaction Score)
CSAT measures how satisfied callers are with their experience, typically on a 1-5 scale collected through post-call surveys. AI receptionists achieve 85-92% satisfaction rates in production deployments. Agencies track CSAT to demonstrate value to clients and identify agents that need knowledge base improvements.
DNCR (Do Not Call Register)
The DNCR is a government-maintained list of phone numbers whose owners have opted out of receiving unsolicited calls. In Australia, the DNCR is managed by ACMA. In the US, the equivalent is the National Do Not Call Registry managed by the FTC. Platforms with outbound calling must automatically filter campaigns against these registries before dialing.
HIPAA (Health Insurance Portability and Accountability Act)
HIPAA is a US federal law that governs how protected health information (PHI) is stored, transmitted, and accessed. Any voice AI system handling calls for medical practices, dental offices, therapists, or other healthcare providers must be HIPAA compliant. Some platforms charge $500/month or more for HIPAA as an add-on. Others, like Trillet, include it on every plan at no extra cost.
Honeypot Detection
Honeypot detection is a screening process that identifies trap phone numbers planted by regulators or litigants to catch companies making non-compliant outbound calls. If an outbound AI campaign dials a honeypot number, the agency faces TCPA fines of $500-$1,500 per call. Trillet is currently the only voice AI platform offering honeypot detection as a built-in feature.
Inbound
Inbound refers to calls that come into a business from customers or prospects. An inbound AI receptionist answers these calls when the business owner cannot. Most voice AI deployments start with inbound because it solves the immediate problem of missed calls without requiring compliance-heavy outbound infrastructure.
Knowledge Base
A knowledge base is the information an AI agent uses to answer questions during calls. It typically includes business hours, services, pricing, FAQs, and policies. Modern platforms build knowledge bases automatically by scraping the client's website, online reviews, and social media profiles. Manual entry is also an option for specialized information the AI cannot find online.
Latency
Latency is the time between when a caller finishes speaking and when the AI begins its response. In voice AI, sub-2-second end-to-end latency (including telephony overhead) is the threshold for natural conversation. Anything above 3 seconds creates awkward pauses that make callers uncomfortable or cause them to hang up. Trillet achieves approximately 2.1 seconds end-to-end.
LTV (Lifetime Value)
LTV is the total revenue an agency earns from a single client over the entire duration of the relationship. If a client pays $400/month and stays for 14 months, LTV is $5,600. Agencies use LTV to determine how much they can afford to spend acquiring each new client. A healthy voice AI agency targets an LTV-to-CAC (customer acquisition cost) ratio of at least 3:1.
MBG (Money-Back Guarantee)
An MBG is a refund policy that lets customers try a product risk-free for a defined period. In voice AI, MBGs have largely replaced free trials. The typical structure is 28 days, no questions asked, applied to actual production usage rather than a limited sandbox environment. This approach gives agencies real call data to evaluate platform quality before committing.
MRR (Monthly Recurring Revenue)
MRR is the predictable revenue an agency earns each month from active subscriptions. If an agency has 15 clients paying $400/month each, MRR is $6,000. MRR is the primary financial metric for voice AI agencies because the business model is subscription-based. Growth means increasing MRR through new clients while minimizing churn.
Native Platform
A native platform owns and controls its own voice AI infrastructure end-to-end. It does not depend on third-party providers like Vapi or Retell for core functionality. Native platforms offer one support channel, one relationship, and one point of accountability. When something breaks, the platform's own engineers fix it. Trillet and Stammer AI are examples of native platforms. As of June 2026, the distinction between native and wrapper is the single most important architectural decision for agencies choosing a white-label voice AI platform.
Outbound
Outbound refers to calls the AI initiates to contacts, rather than answering incoming calls. Common outbound use cases include lead follow-up callbacks, appointment reminders, re-engagement campaigns, and post-service surveys. Outbound calling carries stricter compliance requirements (TCPA, ACMA, DNCR) than inbound and is not available on all platforms.
SIP Trunk
A SIP trunk is the digital equivalent of a phone line. It connects a voice AI platform to the telephone network so it can make and receive calls. Agencies do not need to understand SIP trunk architecture in detail. What matters is whether the platform handles SIP connectivity internally (simpler for the agency) or requires the agency to provision its own SIP trunks through a provider like Twilio or Telnyx (more complex, more potential failure points).
SOC 2 (Type II)
SOC 2 Type II is an auditing standard that verifies a company's controls for data security, availability, processing integrity, confidentiality, and privacy over a sustained period (typically 6-12 months). It is more rigorous than SOC 2 Type I, which only evaluates controls at a single point in time. Agencies serving clients in healthcare, finance, or legal should require SOC 2 Type II certification from their platform provider.
STT (Speech-to-Text)
STT is the technology that converts spoken words into written text during a phone call. The AI needs to "hear" what the caller says before it can process and respond. STT accuracy directly affects conversation quality: if the system mishears "Thursday" as "Saturday," it books the wrong appointment. Modern STT engines achieve 95%+ accuracy in clean audio conditions.
Sub-Account
A sub-account is a separate workspace within a white-label platform, dedicated to a single client. Each sub-account has its own AI agents, phone numbers, knowledge base, call logs, and analytics. The agency manages all sub-accounts from one dashboard, but each client only sees their own data. Some platforms limit sub-accounts (Trillet Studio: 3, with additional at $15/month each), while others offer unlimited sub-accounts on higher-tier plans (Trillet Agency: unlimited at $299/month).
TCPA (Telephone Consumer Protection Act)
TCPA is a US federal law that restricts telemarketing calls, auto-dialed calls, prerecorded calls, and unsolicited text messages. Violations carry penalties of $500-$1,500 per call. For voice AI agencies running outbound campaigns, TCPA compliance is not optional. The platform must handle consent tracking, time-of-day restrictions, and Do Not Call list filtering automatically.
TTS (Text-to-Speech)
TTS is the technology that converts the AI's text responses into spoken audio during a phone call. TTS quality determines how natural the AI sounds to callers. Low-quality TTS produces robotic, monotone speech. High-quality TTS produces natural intonation, appropriate pacing, and realistic pronunciation. The quality of TTS has improved dramatically since 2024, with modern engines producing speech that most callers cannot distinguish from a human in short interactions.
White-Label
White-label means the agency resells the platform's technology under the agency's own brand. The end client never sees the underlying platform provider's name, logo, or domain. Full white-labeling includes custom domains, branded dashboards, custom emails, and branded client portals. The depth of white-labeling varies by platform and plan tier. Some platforms offer only logo swaps on a shared domain. Others, like Trillet's Agency plan, provide complete brand separation with custom domains and branded email communications.
Wrapper
A wrapper is a user interface layer built on top of another company's voice AI infrastructure. Wrapper platforms like Voicerr, Vapify, and VoiceAIWrapper add dashboards, billing, and agency management features on top of Vapi or Retell's underlying technology. The problem: wrappers create 5+ dependency layers (wrapper, Vapi/Retell, LLM provider, TTS provider, telephony). If any single layer has an outage, the agency's clients go down and the agency has no ability to fix it. Voicerr's price increase from $28 to $199-$299/month in early 2026 also demonstrated the pricing risk of building on someone else's infrastructure.
Frequently Asked Questions
What is the difference between an AI receptionist and an AI agent?
An AI receptionist is a specific type of AI agent designed to answer inbound phone calls for a business. An AI agent is a broader category covering any AI system that takes autonomous multi-step actions. All AI receptionists are AI agents, but not all AI agents are AI receptionists. Some AI agents handle outbound calling, text chat, or internal workflows instead of inbound phone answering.
What does "native platform" mean in voice AI?
A native voice AI platform owns and operates its own infrastructure for processing calls, running AI models, and connecting to the phone network. It does not rely on third-party providers like Vapi or Retell for core functionality. This gives native platforms a single point of accountability: when something breaks, one company is responsible for fixing it.
Why does HIPAA compliance matter for voice AI agencies?
HIPAA compliance is required by US federal law for any system that handles protected health information. If an agency deploys voice AI for medical practices, dental offices, therapists, or any healthcare provider without HIPAA compliance, both the agency and the client face potential fines. Some platforms include HIPAA on every plan. Others charge $500/month or more as an add-on, which directly reduces agency margins.
What is the difference between a wrapper and a native platform?
A wrapper adds a dashboard and agency features on top of another company's voice AI infrastructure (usually Vapi or Retell). A native platform owns and controls the entire stack. The practical difference for agencies: wrappers have multiple failure points and no control over outages, pricing changes, or feature development from the underlying provider. Native platforms handle everything in-house.
How is MRR different from total revenue for a voice AI agency?
MRR counts only the predictable, recurring subscription revenue from active clients. It excludes one-time setup fees, consulting charges, or project-based work. MRR is the metric investors and acquirers value most because it represents stable, repeatable income. A voice AI agency with $8,000 MRR and low churn is more valuable than one with $12,000 in mixed project and subscription revenue.
