> For the complete documentation index, see [llms.txt](https://docs.dapta.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.dapta.ai/ai-voice-agents.md). # AI Voice Agents - [Start here](https://docs.dapta.ai/ai-voice-agents/ai-voice-agents.md): Voice Agents make and answer phone calls for you. What they do, what you need to run one, and where to go for each part of the setup. - [Voice Agent Use Case: Calling & Logging HubSpot Leads](https://docs.dapta.ai/ai-voice-agents/ai-voice-agents/voice-agent-use-case-calling-and-logging-hubspot-leads.md): In this tutorial, we’ll walk through a full workflow for integrating HubSpot with Dapta to run a voice sequence. The goal: trigger outbound calls to a HubSpot contact list, log results, and feed them - [How to Automatically Schedule Appointments with Your AI Voice Agent](https://docs.dapta.ai/ai-voice-agents/ai-voice-agents/how-to-automatically-schedule-appointments-with-your-ai-voice-agent.md): Connect Cal.com to your AI voice agent for real-time scheduling, using the built-in current-time variable to match the caller's timezone automatically. - [Designing Voice Agent Prompts for iOS Call Screening](https://docs.dapta.ai/ai-voice-agents/ai-voice-agents/designing-voice-agent-prompts-for-ios-call-screening.md): Write a 12 to 18 word opening line your voice agent needs to get past Apple's iOS 26 Call Screening instead of being silently declined. - [Create your first Voice Agent](https://docs.dapta.ai/ai-voice-agents/creating-a-voice-agent.md): Fill in Company Context, choose your agent's purpose, and Dapta auto-generates a starting prompt you can test with a call and refine in Advanced Settings. - [Setting up Company Context](https://docs.dapta.ai/ai-voice-agents/creating-a-voice-agent/setting-up-company-context.md): Fill in your voice agent's Company Name, Website URL and Description in the Context tab, or let Dapta's AI auto-generate the description from your site. - [Test Agent](https://docs.dapta.ai/ai-voice-agents/creating-a-voice-agent/test-agent.md): Test your voice agent before going live using the Test Agent section: chat with it in real time or let AI run an automated simulated conversation. - [Configure your agent](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent.md): In this section, you will learn how to set up the initial steps for your AI voice agent, including speech settings, voice configuration, and call settings. These steps will help you tailor your agent - [Dapta Auto](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/dapta-auto.md): Dapta Auto is the model Dapta chooses and keeps up to date for your Voice Agent. Pick it under LLM Model; the per-minute price of a call doesn't change. - [Improving prompts with AI](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/improving-prompts-with-ai.md): Use the Improve with AI tool to quickly refine any part of your prompt. Whether you're adjusting tone, fixing clarity, or simplifying language, this feature makes it easy to polish your agent’s script - [Using dynamic variables](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/using-dynamic-variables.md): Define dynamic variables to personalize voice agent prompts, see which names Dapta reserves, and store custom action responses as variables mid-call. - [Improving pronunciation](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/improving-pronunciation.md): Format phone numbers, emails and alphanumeric codes so your voice agent pronounces them clearly, plus rules for preserving names and verifying data aloud. - [Adding pauses](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/adding-pauses.md): A space-surrounded dash in a voice agent's prompt adds roughly a 0.3-second pause; chain dashes to lengthen it for phone numbers, codes, or emphasis. - [Prompt Guide](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/prompt-guide.md): Structure a voice agent prompt with identity, context, style and constraints sections, using Dapta's full example template and video walkthrough. - [Brains](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/brains.md): Knowledge bases that power your Voice and Text Agents: upload files, add web pages, or paste text to build a searchable memory source your agents draw on. - [Voice Emotions](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-emotions.md): Give your voice agent emotional expression. Pick an expressive voice using the Emotionality rating, and see the emotions your agent used right inside the call transcript. - [Voice Agent Settings Guide](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide.md): Guides to fine-tune your agent. - [Conversation Behavior – Start Conversation](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/conversation-behavior-start-conversation.md): Choose whether the caller speaks first or your AI voice agent opens with a dynamic, prompt-based message or a single predefined line. - [Conversation Start Behavior - Response Delay](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/conversation-start-behavior-response-delay.md): Change the time your agent waits before it begins to speak. - [Speech Settings - Responsiveness](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/speech-settings-responsiveness.md): Set Responsiveness from 0 for deliberate pauses to 1 for instant replies, with 0.5 to 0.8 recommended for natural, fluid conversations. - [Speech Settings - Interruption Sensitivity](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/speech-settings-interruption-sensitivity.md): Set Interruption Sensitivity from 0, where your AI finishes its thought, to 1, fully interruptible, with 0.5 to 0.8 recommended for balanced conversations. - [Speech Settings - Active Listening](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/speech-settings-active-listening.md): Turn on Active Listening so your voice agent interjects natural backchanneling cues like uh-huh while the caller speaks, or leave it off for silence. - [Speech Settings - Pronunciation](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/speech-settings-pronunciation.md): Teach your voice agent how to pronounce specific names, brands, and terms by mapping a word to how it should sound out loud. - [Configure Conversation – Background Sound](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/configure-conversation-background-sound.md): This setting allows you to add background sound to your agent, giving the call a bit more realism. You can also configure the volume of the ambient sound. - [Configure Conversation – Boosted Keywords](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/configure-conversation-boosted-keywords.md): Add up to 100 comma-separated domain terms as Boosted Keywords so Dapta's transcription recognizes technical vocabulary and uncommon words accurately. - [Configure Conversation – Transcript Formatting](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/configure-conversation-transcript-formatting.md): The Transcript Formatting feature is designed to prevent common interpretation errors by agents, such as when phone numbers are incorrectly formatted as timestamps. - [Configure Conversation – Clean Speech](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/configure-conversation-clean-speech.md): Normalize Text for Speech Synthesis - [Configure Voice – Voice Model](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/configure-voice-voice-model.md): Choose the voice model your AI agent will use - [Configure Voice – Voice](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/configure-voice-voice.md): Choose your agent’s voice - [Voice Settings - Voice Speed ‍](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/voice-settings-voice-speed.md): Adjust Voice Speed from 0.5 for a calm, deliberate tone to 2.0 for urgent delivery, with 0.7 to 1.3 recommended for clear conversations. - [Voice Settings - Voice Temperature](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/voice-settings-voice-temperature.md): Set Voice Temperature from 0 for steady, predictable delivery to 2 for lively variation, with 1 recommended as the balanced, natural default. - [Voice Settings - Voice Volume](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/voice-settings-voice-volume.md): Set Voice Volume from 0 for softer, blended output to 2 for louder projection in noisy settings, with 1 as the neutral, calibrated default. - [Conversation Settings - Voicemail Detection](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/conversation-settings-voicemail-detection.md): Turn on Voicemail Detection so your agent hangs up or leaves a static or prompt-based message instead of talking to a recording. - [Configure Call – End Call on Silence](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/configure-call-end-call-on-silence.md): This feature allows your agent to end a call after a set number of seconds of silence. - [Configure Call – Max Duration](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/configure-call-max-duration.md): This feature allows you to set a maximum duration for the calls your agent makes. - [Configure Call – Public Call Link](https://docs.dapta.ai/ai-voice-agents/how-to-set-up-your-ai-voice-agent/voice-agent-settings-guide/configure-call-public-call-link.md): Choose whether the recording links of your agent's calls play for anyone who has them, or open the call inside Dapta only after sign-in. - [Agent actions](https://docs.dapta.ai/ai-voice-agents/agent-actions.md): Enable your agents to perform actions such as scheduling appointments, ending or transferring calls - [End Call](https://docs.dapta.ai/ai-voice-agents/agent-actions/end-call.md): Customize how the agent ends calls - [Schedule Appointments with dCal](https://docs.dapta.ai/ai-voice-agents/agent-actions/schedule-appointments-with-dapta-calendars.md): Let your Voice Agent offer your real open times and book the appointment during the call. Add the Dapta Calendars Scheduling action, pick the meeting, and every booking lands in your dCal account. - [Cal.com](https://docs.dapta.ai/ai-voice-agents/agent-actions/cal.com.md): Customize how the agent connects with calendars - [Check calendar availability](https://docs.dapta.ai/ai-voice-agents/agent-actions/check-calendar-availability.md): Customize how the agent connects with calendars - [Book calendar](https://docs.dapta.ai/ai-voice-agents/agent-actions/book-calendar.md): Customize how the agent schedules an appointment - [Transfer Call](https://docs.dapta.ai/ai-voice-agents/agent-actions/transfer-call.md): Route calls to a predefined number or dynamic condition, choose cold, warm or agentic warm transfers, restrict them to business hours and pass context in SIP headers. - [Send WhatsApp Template](https://docs.dapta.ai/ai-voice-agents/agent-actions/send-whatsapp-template.md): Let your voice agent send a pre-approved WhatsApp template to the contact during a phone call — for example a registration form, a follow-up link, or key information the contact asked for. - [Phone numbers & telephony](https://docs.dapta.ai/ai-voice-agents/phone-numbers.md): Every way to give a Voice Agent a phone line — buy one in Dapta, verify a number you own, add a test number, or connect your own telephony. - [Buying Phone Numbers through Dapta](https://docs.dapta.ai/ai-voice-agents/phone-numbers/buying-phone-numbers-through-dapta.md): Purchase a US-based phone number for 1,380 credits per month, link it to a Voice Agent, and reassign it to a different agent anytime. - [Verifying an Existing Phone Number for Outbound Calls](https://docs.dapta.ai/ai-voice-agents/phone-numbers/verifying-phone-numbers-in-dapta.md): Verify an existing phone number with a keypad code so your Voice Agent can place outbound calls from it, plus how test calls avoid using credits. - [How to add a Phone Number for Testing in Dapta](https://docs.dapta.ai/ai-voice-agents/phone-numbers/how-to-add-a-phone-number-for-testing-in-dapta.md): A Test Number lets your Voice Agent call your own phone without consuming credits, available on paid plans including trial, added once per month. - [Connecting your telephony (SIP trunk) to Dapta](https://docs.dapta.ai/ai-voice-agents/phone-numbers/connecting-your-sip-trunk.md): Choose how a Voice Agent makes and receives calls: a Dapta-managed number, your own Twilio trunk, another SIP provider, or a guided enterprise setup. - [Connect a Dapta-managed number](https://docs.dapta.ai/ai-voice-agents/phone-numbers/connecting-your-sip-trunk/connect-a-dapta-managed-number.md): Buy a Dapta-managed phone number, assign it to a Voice Agent, and use it for inbound and outbound calls. - [Connect your own SIP trunk (custom / BYO)](https://docs.dapta.ai/ai-voice-agents/phone-numbers/connecting-your-sip-trunk/connect-your-own-sip-trunk-custom-byo.md): Connect your own Twilio Elastic SIP Trunking setup, carrier, PBX, or SIP trunk to Dapta for outbound and inbound Voice Agent calls. - [Custom telephony for enterprise and large companies](https://docs.dapta.ai/ai-voice-agents/phone-numbers/connecting-your-sip-trunk/custom-telephony-for-enterprise-large-companies.md): Plan an enterprise custom telephony setup with Dapta, including dedicated SIP proxy routing, human transfers, concurrency, and onboarding requirements. - [Inbound Calls and How to Activate Them](https://docs.dapta.ai/ai-voice-agents/phone-numbers/inbound-calls-and-how-to-activate-them.md): An inbound line lets customers reach an AI Agent through a Dapta-activated number; US numbers are bought directly, other countries through Support. - [Concurrent calls](https://docs.dapta.ai/ai-voice-agents/phone-numbers/concurrent-calls.md): How many calls your account can have live at once, how that total splits into separate inbound and outbound limits per plan, and how to prepare for a burst of calls. - [Channels](https://docs.dapta.ai/ai-voice-agents/channels.md): Connect your Voice Agent to communication channels like WhatsApp to receive and make voice calls through messaging platforms. - [Connect your Voice Agent with WhatsApp](https://docs.dapta.ai/ai-voice-agents/channels/connect-your-voice-agent-with-whatsapp.md): A WhatsApp Business line linked to a Voice Agent can place and receive calls, once Meta's messaging volume and a Text Agent warm-up period are met. Connecting new numbers to voice agents is paused for - [Sequences](https://docs.dapta.ai/ai-voice-agents/how-to-create-your-first-campaign-in-dapta.md): A sequence lets you launch outbound voice calls at scale—no code or complex integrations needed. connect your contacts, configure your schedule, and let your AI voice agent handle the rest. - [Create a sequence](https://docs.dapta.ai/ai-voice-agents/how-to-create-your-first-campaign-in-dapta/create-a-campaign.md): A four-step wizard builds an outbound calling sequence: name it, pick an agent, set the calling schedule, connect a contact source, and map its columns. - [Managing your sequence](https://docs.dapta.ai/ai-voice-agents/how-to-create-your-first-campaign-in-dapta/managing-your-campaign.md): The sequence detail page's Settings, Call Logs, Contact List, and Metrics tabs cover schedules, disconnect reasons, and connection and success rates. - [Importing data](https://docs.dapta.ai/ai-voice-agents/how-to-create-your-first-campaign-in-dapta/importing-data.md): A CSV or XLSX file loads contacts into a voice sequence; phone numbers must use E.164 format, and columns map to CRM fields you can reuse across sequences. - [Add contacts to a sequence via Flow Studio](https://docs.dapta.ai/ai-voice-agents/how-to-create-your-first-campaign-in-dapta/add-contacts-to-a-campaign-via-flow-studio.md): Automatically sync leads from tools like HubSpot into your voice sequences using Flow Studio. Perfect for keeping your contact lists up to date—without manual uploads. - [Call Logic & Limits](https://docs.dapta.ai/ai-voice-agents/how-to-create-your-first-campaign-in-dapta/call-logic-and-limits.md): Understand how Dapta manages call execution, batch processing, scheduling, retry attempts, and cooldown rules to keep your voice sequences efficient and compliant. - [WhatsApp fallback](https://docs.dapta.ai/ai-voice-agents/how-to-create-your-first-campaign-in-dapta/whatsapp-fallback.md): Reach the contacts your sequence couldn't get on the phone. When the call attempt you choose ends without reaching the contact, because nobody answered or a voicemail picked up, Dapta sends an approve - [Analyze & automate](https://docs.dapta.ai/ai-voice-agents/analyze-your-calls.md): Read what happened on your calls, pull the data out of them, and feed it into the rest of your business automatically. - [Voice Agent Metrics](https://docs.dapta.ai/ai-voice-agents/analyze-your-calls/voice-agent-metrics.md): Understand your Voice Agent's performance with the Metrics tab — track call volume, connection rates, credit usage, and call outcome breakdowns. - [Giving Feedback on Calls](https://docs.dapta.ai/ai-voice-agents/analyze-your-calls/giving-feedback-on-calls.md): 🗣️ You can provide feedback on any call to help improve our AI and support - [Correcting a call result](https://docs.dapta.ai/ai-voice-agents/analyze-your-calls/correcting-a-call-result.md): Correct the AI's result on a voice call when it got it wrong, explain why, and see who changed it and when. - [Extracting Information from your Calls](https://docs.dapta.ai/ai-voice-agents/analyze-your-calls/extracting-information-from-your-calls.md): A Loom video and a Scribe walkthrough show how to pull structured data out of Dapta AI calls for lead qualification, meeting confirmation, or QA review. - [Extract AI Call Variables to a Google Sheets Template](https://docs.dapta.ai/ai-voice-agents/analyze-your-calls/extracting-information-from-your-calls/extract-ai-call-variables-to-a-google-sheets-template.md): A ready-made Google Sheets template captures variables extracted from Dapta AI calls; the page links the template and a Loom video showing how to copy it. - [Post-call analysis](https://docs.dapta.ai/ai-voice-agents/analyze-your-calls/post-call-analysis.md): The Call Analysis tab of a voice agent: what the AI checks after every call, which data it pulls out of the conversation, and where the results go. - [Post Call Analysis – Destinations](https://docs.dapta.ai/ai-voice-agents/analyze-your-calls/post-call-analysis-destinations.md): Send every call's results to Google Sheets, HubSpot or a Dapta flow as soon as the call ends, and test them with the agent's latest call. - [Post Call Analysis – Post-Call Data Retrieval](https://docs.dapta.ai/ai-voice-agents/analyze-your-calls/post-call-analysis-post-call-data-retrieval.md): This feature allows you to specify what information you want to extract from each interaction once the call has ended. - [Post Call Analysis – Call Analysis Flow](https://docs.dapta.ai/ai-voice-agents/analyze-your-calls/post-call-analysis-call-analysis-flow.md): This section allows you to configure how calls made by the AI agent will be analyzed using the flows previously created in Flow Studio. - [Post Call Analysis – Notifications](https://docs.dapta.ai/ai-voice-agents/analyze-your-calls/post-call-analysis-notifications.md): Email an alert after a call when a post-call condition is met, or get a daily email report of a voice agent's call performance. - [Advanced Guide: AI Call Integration Templates and Google Sheets](https://docs.dapta.ai/ai-voice-agents/analyze-your-calls/advanced-guide-ai-call-integration-templates-and-google-sheets.md): Configure timezone settings, build loops for repetitive tasks, and auto-log call data to Google Sheets using Dapta's ready-made template. - [Integrating and activating your AI calls easily](https://docs.dapta.ai/ai-voice-agents/analyze-your-calls/integrating-and-activating-your-ai-calls-easily.md) --- # Agent Instructions This documentation is published with GitBook. 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